AYA SUGIYAMA

Last Updated :2024/09/03

Affiliations, Positions
Graduate School of Biomedical and Health Sciences(Medical), Associate Professor or Lecturer
Web Site
http://home.hiroshima-u.ac.jp/eidcp/
E-mail
aya-sugiyamahiroshima-u.ac.jp
Other Contact Details
1-2-3Kasumi Minami-ku Hiroshima-shi Hiroshima-ken, Japan, Japan
TEL : (+81)82-257-5162 FAX : (+81)82-257-5164
Self-introduction
I am a lecturer of Department of Epidemiology Infectious Disease Control and Prevention, Hiroshima University Institute of Biomedical and Health Sciences, Japan. My major research theme is the epidemiology of hepatitis virus infection, NAFLD et al. Since the outbreak of COVID-19 in 2020, I have been engaged in large-scale epidemiological research to understand the infection status in Hiroshima Prefecture.

Basic Information

Major Professional Backgrounds

  • 2004/04/01, 2006/03/31, Miyoshi Central Hospital
  • 2006/04/01, 2008/02/29, Hiroshima City Asa Citizens Hospital
  • 2010/04/01, 2015/11/30, Hiroshima Atomic bomb casuality council
  • 2010/06/14, 2012/10/31, Hiroshima University, Hospital, Clinical Fellow
  • 2012/11/01, 2014/03/31, Hiroshima University, Hospital, Clinical Staff
  • 2013/04/01, 2014/03/31, Kenkou Club
  • 2014/04/01, 2015/03/31
  • 2014/04/01, 2015/03/31, Hiroshima University, Hospital, Clinical Fellow
  • 2015/04/01, 2015/12/31, Hiroshima University, Institute of Biomedical & Health Sciences, Assistant Professor (Special Appointment)
  • 2016/01/01, 2019/03/31, Hiroshima University, Institute of Biomedical & Health Sciences, Assistant Professor
  • 2023/04/01, Hiroshima University, Department of Epidemiology Infectious Disease Control and Prevention, Graduate school of Biomedical and Health Sciences, Lecturer

Educational Backgrounds

  • Hiroshima University, Japan, 2010/10, 2014/03
  • Kumamoto University, Japan, 1998/04, 2004/03

Academic Degrees

  • Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Medicine : Program of Medicine : Medicine
  • [Master's Program] Graduate School of Biomedical and Health Sciences : Division of Integrated Health Sciences : Program of Public Health
  • [Master's Program] Graduate School of Biomedical and Health Sciences : Division of Integrated Health Sciences : Program of Biomedical Science
  • [Doctoral Program] Graduate School of Biomedical and Health Sciences : Division of Integrated Health Sciences : Program of Biomedical Science
  • [Doctoral Program] Graduate School of Biomedical and Health Sciences : Division of Biomedical Sciences : Program of Medicine

Research Fields

  • Medicine,dentistry, and pharmacy;Society medicine;Hygiene and public health

Research Keywords

  • Epidemiology, Disease control, Preventive medicine, Public Health, Hygiene, Epidemiology of hepatitis virus infection, Epidemiology of Fatty liver disease, Epidemiology of COVID-19

Affiliated Academic Societies

  • Japanese society of public health, Japanese society of internal medicine, The Japan society of hepatology, Japanese respiratory society, Japan epidemiological association
  • Japan Epidemiological Association

Educational Activity

Course in Charge

  1. 2024, Graduate Education (Master's Program) , 1Term, Academic approach to SDGs - A
  2. 2024, Graduate Education (Master's Program) , 2Term, Academic approach to SDGs - A[On-Demand]
  3. 2024, Undergraduate Education, Intensive, Social Medicine
  4. 2024, Undergraduate Education, 2Term, Introduction for medical research
  5. 2024, Undergraduate Education, 2Term, Outline of the Global Leadership Role
  6. 2024, Graduate Education (Master's Program) , First Semester, Seminar
  7. 2024, Graduate Education (Master's Program) , Second Semester, Seminar
  8. 2024, Graduate Education (Master's Program) , First Semester, Research
  9. 2024, Graduate Education (Master's Program) , Second Semester, Research
  10. 2024, Graduate Education (Doctoral Program) , First Semester, Advanced Seminar
  11. 2024, Graduate Education (Doctoral Program) , Second Semester, Advanced Seminar
  12. 2024, Graduate Education (Doctoral Program) , First Semester, Advanced Research
  13. 2024, Graduate Education (Doctoral Program) , Second Semester, Advanced Research
  14. 2024, Graduate Education (Master's Program) , First Semester, Research on Public Health (Epidemiology)
  15. 2024, Graduate Education (Master's Program) , Second Semester, Research on Public Health (Epidemiology)
  16. 2024, Graduate Education (Master's Program) , First Semester, Research on Public Health (Biostatistics)
  17. 2024, Graduate Education (Master's Program) , Second Semester, Research on Public Health (Biostatistics)
  18. 2024, Graduate Education (Master's Program) , First Semester, Basic Epidemiology and Practice
  19. 2024, Graduate Education (Master's Program) , Second Semester, Basic and Advanced Training on Methodology for Clinical Research
  20. 2024, Graduate Education (Master's Program) , 1Term, Environmental Health
  21. 2024, Graduate Education (Master's Program) , First Semester, Exercise and Seminar on Epidemiological Research and It's Analysis
  22. 2024, Graduate Education (Master's Program) , 1Term, Advanced Lecture on Preventive Medicine for Evidence-based Health Guidance A
  23. 2024, Graduate Education (Master's Program) , 3Term, Advanced Lecture on Preventive Medicine for Evidence-based Health Guidance B
  24. 2024, Graduate Education (Doctoral Program) , First Semester, Advanced Seminar on Epidemiology,Infectious Disease Control and Prevention
  25. 2024, Graduate Education (Doctoral Program) , Second Semester, Advanced Seminar on Epidemiology,Infectious Disease Control and Prevention
  26. 2024, Graduate Education (Doctoral Program) , First Semester, Advanced Research on Epidemiology,Infectious Disease Control and Prevention
  27. 2024, Graduate Education (Doctoral Program) , Second Semester, Advanced Research on Epidemiology,Infectious Disease Control and Prevention
  28. 2024, Graduate Education (Doctoral Program) , Second Semester, Basic and Advanced Training on Methodology for Clinical Research

Research Activities

Academic Papers

  1. Natural course of post-COVID symptoms in adults and children, SCIENTIFIC REPORTS, 14(1), 20240216
    Link to Paper Search Results by DOI
  2. Variant-specific symptoms after COVID-19: a hospital-based study in Hiroshima, JOURNAL OF EPIDEMIOLOGY, 34(5), 238-246, 202405
    Link to Paper Search Results by DOI
  3. Incidence and prevalence of epilepsy in Japan: a retrospective analysis of insurance claims data of 9,864,278 insured persons, JOURNAL OF EPIDEMIOLOGY, 34(2), 70-75, 202402
    Link to Paper Search Results by DOI
  4. Despite low viral titer in saliva samples, Sanger-based SARS-CoV-2 spike gene sequencing is highly applicable for the variant identification, BMC MEDICAL GENOMICS, 16(1), 20230824
    Link to Paper Search Results by DOI
  5. Intermediate hepatitis B virus infection prevalence among 1622 pregnant women in rural Burkina Faso and implications for mother-to-child transmission, SCIENTIFIC REPORTS, 13(1), 20230414
    Link to Paper Search Results by DOI
  6. Residual risk of mother-to-child transmission of HBV despite timely Hepatitis B vaccination: a major challenge to eliminate hepatitis B infection in Cambodia, BMC INFECTIOUS DISEASES, 23(1), 20230426
    Link to Paper Search Results by DOI
  7. Trend of blood donors entering the coronavirus pandemic era and challenges: Age-period-cohort analysis using 75.5 million all blood donations data during 2006-2020 in Japan, TRANSFUSION, 63(6), 1184-1194, 202306
    Link to Paper Search Results by DOI
  8. The impact of COVID-19 on hepatitis B and C virus prevention, diagnosis, and treatment in Bangladesh compared with Japan and the global perspective, BMC HEALTH SERVICES RESEARCH, 23(1), 20231023
    Link to Paper Search Results by DOI
  9. Multi-phasic gene profiling using candidate gene approach predict the capacity of specific antibody production and maintenance following COVID-19 vaccination in Japanese population, FRONTIERS IN IMMUNOLOGY, 14, 20230726
    Link to Paper Search Results by DOI
  10. Authors' response to "prevalence and incidence of fatty liver for people who took part in a health checkup in 2008-2019 in Japan", Liver international, 42(6), 1478-1478, 2022
    Link to Paper Search Results by DOI
  11. The role of discrimination in the relation between COVID-19 sequelae, psychological distress, and work impairment in COVID-19 survivors, SCIENTIFIC REPORTS, 12(1), 20221223
    Link to Paper Search Results by DOI
  12. Effect of COVID-19 on hepatitis B and C virus countermeasures: Hepatologist responses from nationwide survey in Japan, HEPATOLOGY RESEARCH, 52(11), 899-907, 202211
    Link to Paper Search Results by DOI
  13. Prevalence of fatty liver and advanced fibrosis by ultrasonography and FibroScan in a general population random sample, HEPATOLOGY RESEARCH, 52(11), 908-918, 202211
    Link to Paper Search Results by DOI
  14. Seroepidemiological study of factors affecting anti-spike IgG antibody titers after a two-dose mRNA COVID-19 vaccination in 3744 healthy Japanese volunteers, SCIENTIFIC REPORTS, 12(1), 20220929
    Link to Paper Search Results by DOI
  15. A longitudinal study of anti-SARS-CoV-2 antibody seroprevalence in a random sample of the general population in Hiroshima in 2020, ENVIRONMENTAL HEALTH AND PREVENTIVE MEDICINE, 27(30), 2022
    Link to Paper Search Results by DOI
  16. Impact of robot-assisted surgery appearance on reduction of annual blood transfusion cases in Japan: application of meta-analysis and NDB open data, JOURNAL OF ROBOTIC SURGERY, 16(5), 1229-1232, 202210
    Link to Paper Search Results by DOI
  17. Prevalence of Helicobacter pylori infection in the general population evaluated by a resident-register-based epidemiological study, JOURNAL OF GASTROENTEROLOGY, 57(8), 540-546, 202208
    Link to Paper Search Results by DOI
  18. Dried blood spot-based detection of serological profiles of hepatitis B and C infections and their prevalence in Cambodia, GastroHep, 3(4), 247-253, 20210602
  19. Identification of Aggravation-Predicting Gene Polymorphisms in Coronavirus Disease 2019 Patients Using a Candidate Gene Approach Associated With Multiple Phase Pathogenesis: A Study in a Japanese City of 1 Million People, Critical care explorations, 3(11), e0576, 20211105
  20. Burden of chronic hepatitis B and C infections in 2015 and future trends in Japan: A simulation study, LANCET REGIONAL HEALTH-WESTERN PACIFIC, 22, 202205
    Link to Paper Search Results by DOI
  21. Adverse reactions to the BNT162b2 and mRNA-1273 mRNA COVID-19 vaccines in Japan, JOURNAL OF INFECTION AND CHEMOTHERAPY, 28(4), 576-581, 202204
    Link to Paper Search Results by DOI
  22. Long COVID occurrence in COVID-19 survivors, SCIENTIFIC REPORTS, 12(1), 20220411
    Link to Paper Search Results by DOI
  23. Prevalence and genotype distribution of viral hepatitis B in Cambodia between 1990 and 2020: a systematic review and meta-analysis, ARCHIVES OF PUBLIC HEALTH, 80(1), 20220413
    Link to Paper Search Results by DOI
  24. Exercising the Sanger Sequencing Strategy for Variants Screening and Full-Length Genome of SARS-CoV-2 Virus during Alpha, Delta, and Omicron Outbreaks in Hiroshima, VIRUSES-BASEL, 14(4), 202204
    Link to Paper Search Results by DOI
  25. Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups, BMC GASTROENTEROLOGY, 22(1), 20220513
    Link to Paper Search Results by DOI
  26. Sequential dynamics of virological and serological changes in the serum of SARS-CoV-2 infected patients, JOURNAL OF MEDICAL VIROLOGY, 94(4), 1734-1737, 202204
    Link to Paper Search Results by DOI
  27. Mass Screening of SARS-CoV-2 Variants using Sanger Sequencing Strategy in Hiroshima, Japan, SCIENTIFIC REPORTS, 12(1), 20220214
    Link to Paper Search Results by DOI
  28. ★, Characteristics of inspiratory and expiratory reactance in interstitial lung disease, Respiratory medicine, 107(6), 875-882, 2013
  29. Predicting future blood supply and demand in Japan with a Markov model: application to the sex- and age-specific probability of blood donation, Transfusion, 56, 2750-2759, 2016
  30. Effect of increasing respiratory rate on airway resistance and reactance in COPD patients., Respirology (Carlton, Vic.), 20(1), 2015
  31. ★, Reduced prevalence of hepatitis B surface antigen positivity among pregnant women born after the national implementation of immunoprophylaxis for babies born to hepatitis B virus-carrier mothers in Japan, Hepatology Research, 2017
  32. Pilot study for hepatitis virus screening among employees as an effective approach to encourage employees who screened positive to receive medical care in Japan, HEPATOLOGY RESEARCH, 48(3), E291-E302, 201802
    Link to Paper Search Results by DOI
  33. Incidence and risk factors of colorectal cancer based on 56324 health checkups: A 7-year retrospective cohort study, JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, 33(4), 855-862, 201804
    Link to Paper Search Results by DOI
  34. High prevalence of hepatitis B infections in Burkina Faso (1996-2017): a systematic review with meta-analysis of epidemiological studies, BMC PUBLIC HEALTH, 18, 20180425
    Link to Paper Search Results by DOI
  35. Cost-effectiveness analyses of anti-hepatitis C virus treatments using quality of life scoring among patients with chronic liver disease in Hiroshima prefecture, Japan, HEPATOLOGY RESEARCH, 48(7), 509-520, 201806
    Link to Paper Search Results by DOI
  36. Study for the actual status of the hepatitis medical care coordinator –Analysis of the study in Hiroshima and Nationwide survey-, Kanzo, 9(1), 33-40, 201801
  37. Natural course of persistent hepatitis B virus infection in hepatitis B e antigen-positive and hepatitis B e antigen-negative cohorts in Japan based on the Markov model, JOURNAL OF MEDICAL VIROLOGY, 90(12), 1800-1813, 2018
    Link to Paper Search Results by DOI
  38. Incidence rates of hepatitis C virus infection among blood donors in Japan: a nationwide retrospective cohort study, TRANSFUSION, 58(12), 2880-2885, 201812
    Link to Paper Search Results by DOI
  39. Acquisition rate of antibody to hepatitis B surface antigen among medical and dental students in Japan after three-dose hepatitis B vaccination, VACCINE, 37(1), 145-151, 20190103
    Link to Paper Search Results by DOI
  40. The Pilot Study for Health Check-Ups System at Elementary School in Cambodia, Hiroshima Journal of Medical Sciences, 67(3), 88-92, 2018
  41. Countermeasures against viral hepatitis B and C in Japan: An epidemiological point of view, HEPATOLOGY RESEARCH, 49(9), 990-1002, 201909
    Link to Paper Search Results by DOI
  42. The changing epidemiology of hepatitis B and C infections in Nanoro, rural Burkina Faso: a random sampling survey, BMC INFECTIOUS DISEASES, 20(1), 20200115
    Link to Paper Search Results by DOI
  43. Existence of hepatitis B virus surface protein mutations and other variants: demand for hepatitis B infection control in Cambodia, BMC INFECTIOUS DISEASES, 20(1), 20200425
    Link to Paper Search Results by DOI
  44. Hepatitis B surface antigen seroprevalence among pre- and post-vaccine cohorts in Cambodia, 2017, VACCINE, 37(35), 5059-5066, 20190814
    Link to Paper Search Results by DOI
  45. The Tokyo subway sarin attack has long-term effects on survivors: A 10-year study started 5 years after the terrorist incident, PLOS ONE, 15(6), 20200623
    Link to Paper Search Results by DOI
  46. Comparison of liver disease state progression in patients with eradication of versus persistent infection with hepatitis C virus: Markov chain analysis, JOURNAL OF VIRAL HEPATITIS, 28(3), 538-547, 202103
    Link to Paper Search Results by DOI
  47. Molecular characterization and the mutation pattern of SARS-CoV-2 during first and second wave outbreaks in Hiroshima, Japan, PLOS ONE, 16(2), 20210205
    Link to Paper Search Results by DOI
  48. Screening for M-proteinemia consisting of monoclonal gammopathy of undetermined significance and multiple myeloma for 30 years among atomic bomb survivors in Hiroshima, INTERNATIONAL JOURNAL OF HEMATOLOGY, 113(4), 576-585, 202104
    Link to Paper Search Results by DOI
  49. Prevalence of total hepatitis A antibody among 5 to 7 years old children and their mothers in Cambodia, SCIENTIFIC REPORTS, 11(1), 20210226
    Link to Paper Search Results by DOI
  50. Epidemiological assessment of the interventions for elimination of mother-to-child transmission of hepatitis B virus in Japan, GastroHep, 3(2), 72-79, 20210106
  51. Epidemiologic profile of hepatitis C virus infection and genotype distribution in Burkina Faso: a systematic review with meta-analysis, BMC INFECTIOUS DISEASES, 21(1), 20211101
    Link to Paper Search Results by DOI
  52. Outcomes of Patients Who Undergo Transfusion of Fresh Frozen Plasma: A Prospective, Observational, Multicentre Cohort Study in Hiroshima, Japan, JOURNAL OF BLOOD MEDICINE, 12, 965-973, 2021
    Link to Paper Search Results by DOI
  53. Relationship between drinking frequency and fatty liver prevalence or incidence in Japanese undergoing health checkup in 2008-2019, LIVER INTERNATIONAL, 41(12), 2914-2923, 202112
    Link to Paper Search Results by DOI

Invited Lecture, Oral Presentation, Poster Presentation

  1. Hepatitis C virus transmission among Japan's limited risk groups, Zayar Phyo, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Satoshi Tanaka, Ryotaro Sakamori, Junko Tanaka, The 33rd Annual Meeting of the Asian Pacific, 2024/03/27, Without Invitation, English, published
  2. What percentage of the Japanese population has already been tested for HBV and HCV?, Aya Sugiyama, Tomoyuki Akita, Tatsuya Kanto, Junko Tanaka, The 33rd Annual Meeting of the Asian Pacific Association for the Study of the Liver (APASL 2024 Kyoto), 2024/03/28, Without Invitation, English, published
  3. Sero-prevalence and genotype distribution of HDV among 67 HBsAg-positive pregnant women in Cambodia, Golda Akuffo, Ko Ko, Bunthen E, Serge Ouoba, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takashi, Junko Tanaka, The 33rd Annual Meeting of the Asian Pacific Association for the Study of the Liver (APASL 2024 Kyoto), 2024/03/27, Without Invitation, English, published
  4. Seroprevalence of enteric hepatitis A and E viruses among general residents in Binh Thuan, Vietnam, Chhoung Chanroth, Ko Ko, Zayar Phyo, Akuffo Golda, Mirzaev Ulugbek, Ryozuke Suzuki, Do Huy Son, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Junko Tanaka, The 33rd Annual Meeting of the Asian Pacific Association for the Study of the Liver (APASL 2024 Kyoto), 2024/03/27, Without Invitation, English, published
  5. HBV Vaccination Status and Associated Factors among Healthcare Workers in Kampot and Kep, Cambodia, Sok Savoeun, Chhoung Chanroth, Men Sothy, Nhea Bunthan, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Junko Tanaka, The 33rd Annual Meeting of the Asian Pacific Association for the Study of the Liver (APASL 2024 Kyoto), 2024/03/27, Without Invitation, English, published
  6. Prevalence of Anti-HDV Among 67 HBsAg-positive Pregnant Women in Siem Reap, Cambodia, Golda Akuffo, Ko Ko, Bunthen E, Serge Ouoba, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takashi, Junko Tanaka, The 3rd Japan Society of Hepatology (JSH) International Liver Conference, 2023/09/07, Without Invitation, English, published
  7. Exploring hepatitis C virus transmission among people who inject drugs and men who have sex with men: Rare and limited risk groups in Japan, Zayar Phyo, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Satoshi Tanaka, Ryotaro Sakamori, Junko Tanaka, AASLD 2023, 2023/11/10, Without Invitation, English, Boston, United States of America, published
  8. Investigating cross transmission of hepatitis C virus among rare and limited risk groups in Japan, Zayar Phyo, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Satoshi Tanaka, Ryotaro Sakamori, Junko Tanaka, APASL STC 2023, 2023/11/10, Without Invitation, English, Busan, South Kore, published
  9. Seroprevalence and risk factors of hepatitis E virus infection among pregnant women attending three hospitals in Siem Reap, Cambodia, Ulugbek K Mirzaev, Bunthen E, Serge Ouoba, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Junko Tanaka, The 3rd JSH International liver conference, 2023/09/07, Without Invitation, English, published
  10. A Newly Developed In-house Double Antigen Sandwich ELISA for Detection of Anti-HEV IgG among Pregnant Women in Cambodia, Ulugbek K Mirzaev, Bunthen E, Serge Ouoba, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Junko Tanaka, Asian Pacific Association for the Study of the Liver Single Topic Conference(APASL STC) 2023, 2023/09/21, Without Invitation, English, Busan, published
  11. ENHANCING HEV DIAGNOSTIC TESTING IN RESOURCE-LIMITED SETTINGS: DEVELOPMENT AND EVALUATION OF AN IN-HOUSE ELISA METHOD FOR SEROPREVALENCE ESTIMATION IN CAMBODIA, Ulugbek K Mirzaev, Bunthen E, Serge Ouoba, Ko Ko, Aya Sugiyama, Tomoyuki Akita, Kazuaki Takahashi, Junko Tanaka, The liver meeting - AASLD 2023, 2023/11/10, Without Invitation, English, published
  12. Effectiveness of Tenofovir Prophylaxis for the Prevention of Mother-to-child-transmission of Hepatitis B Virus in Burkina Faso, Ouoba Serge, Ko Ko , Lingani Moussa, Chhoung Chanroth, Phyo Zayar, Sugiyama Aya, Guingane Alice, Sanou Moussa Abdel, E Bunthen, Hussain Md Razeen Ashraf, Akita Tomoyuki, Takahashi Kazuaki, Tinto Halidou, Tanaka Junko, Conference on Liver Disease in Africa (COLDA), 2023/09/07, Without Invitation, English, published
  13. HEALTH-RELATED QUALITY OF LIFE OF UZBEK CHILDREN WITH JUVENILE IDIOPATHIC ARTHRITIS, Sayyora Akhmedova, Abdubosit Ibragimov, Iroda Kasimova, Khilola Saipova, Dilorom Akhmedova, Serge Ouba, Akita Tomoyuki, Sugiyama Aya, Junko Tanaka, Sayyora Akhmedova, Abdubosit Ibragimov, Iroda Kasimova, Khilola Saipova, Dilorom Akhmedova, Serge Ouba, Akita Tomoyuki, Sugiyama Aya, Junko Tanaka, 28th European Pediatric Rheumatology congress, 2022/09/20, Without Invitation, English, Prague (Czech Republic)
  14. Hepatitis B infection prevalence, genotype distribution, and knowledge of mother-to-child transmission among antenatal care attendees in Yako, rural Burkina Faso, Ouoba S, Ko K, Lingani M, Nagashima S, Guingane A, Bunthen E, Hussain MHR, Sugiyama A, Akita T, Ohisa M, Sanou MA, Takahashi K, Tinto H, Tanaka J, Ouoba S, Ko K, Lingani M, Nagashima S, Guingane A, Bunthen E, Hussain MHR, Sugiyama A, Akita T, Ohisa M, Sanou MA, Takahashi K, Tinto H, Tanaka J, The 5th Conference on Liver Disease in Africa (COLDA), 2022/09/08, Without Invitation, English, Cape Town (South Africa)
  15. Comparing the Effect of COVID-19 on Hepatitis B Virus the and Hepatitis C Virus Prevention and Care in Japan with Other Countries, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, The Liver meeting 2022 of the American Association for the Study of Liver Diseases, AASLD, 2022/09/14, Without Invitation, English, the American Association for the Study of Liver Diseases, Washington DC (USA)
  16. Seroprevalence and genotype distribution of Hepatitis B infection among pregnant women in rural Burkina Faso, Ouoba S, Ko K, Lingani M, Nagashima S, Bunthen E, Hussain MHR, Sugiyama A, Akita T, Takahashi K, Sanou M, Guingane A, Tinto H, Tanaka J, Ouoba S, Ko K, Lingani M, Nagashima S, Bunthen E, Hussain MHR, Sugiyama A, Akita T, Takahashi K, Sanou M, Guingane A, Tinto H, Tanaka J, The Liver meeting 2022 of the American Association for the Study of Liver Diseases, AASLD, 2022/09/14, Without Invitation, English, the American Association for the Study of Liver Diseases, Washington DC (USA)
  17. The sero-epidemiological research on the prevalence of hepatitis B virus infection among the pregnant women and their newborn baby in Siem Reap Province, Cambodia, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Md. Razeen Ashraf Hussain, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Tomoyuki Akita, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Md. Razeen Ashraf Hussain, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Tomoyuki Akita, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, The Liver meeting 2022 of the American Association for the Study of Liver Diseases, AASLD, 2022/09/14, Without Invitation, English, the American Association for the Study of Liver Diseases, Washington DC (USA)
  18. Sero-epidemiological study on HBV and HCV infection in elderly care facility staff and residents in Japan, Aya Sugiyama, Yuko Nagaoki, Ko Ko, Akemi Kurisu, Masayuki Ohisa, Khilola Saipova, Sayyora Akhmedova,Tomoyuki Akita, Kazuaki Takahashi, Junko Tanaka, Aya Sugiyama, Yuko Nagaoki, Ko Ko, Akemi Kurisu, Masayuki Ohisa, Khilola Saipova, Sayyora Akhmedova,Tomoyuki Akita, Kazuaki Takahashi, Junko Tanaka, the Asian Pacific Association for the Study of the Liver(APASL) Single Topic Conference 2022, 2022/09/01, Without Invitation, English, the Asian Pacific Association for the Study of the Liver, Takamatsu
  19. The prevalence of hepatitis B virus infection among the pregnant women and their newborn baby in Siem Reap Province, Cambodia, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Md. Razeen Ashraf Hussain, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Tomoyuki Akita, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Md. Razeen Ashraf Hussain, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Tomoyuki Akita, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, the Asian Pacific Association for the Study of the Liver(APASL) Single Topic Conference 2022, 2022/09/01, Without Invitation, English, the Asian Pacific Association for the Study of the Liver, Takamatsu
  20. Assessment of COVID-19 Impact and Response on  Hepatitis B Virus and Hepatitis C Virus Prevention and Treatment from Nationwide Survey in Japan, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, World Hepatitis Summit 2022, 2022/06/07, Without Invitation, English, Geneva, Switzerland
  21. COVID-19 Impact and Response on Hepatitis B Virus and Hepatitis C Virus Prevention and care in Japan, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, European Association for the Study of the Liver (EASL), 2022/05/04, Without Invitation, English, European Association for the Study of the Live, London
  22. Hepatitis B sero-prevalence and genotype distribution among pregnant women in Siem Reap, Cambodia, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, European Association for the Study of the Liver (EASL), 2022/05/04, Without Invitation, English, European Association for the Study of the Liver, LONDON
  23. COVID-19 Response on Hepatitis B Virus and Hepatitis C virus Prevention and Treatment from Nationwide Survey in Japan, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, Md Razeen Ashraf HUSSAIN, Aya SUGIYAMA, Lindsey HIEBERT, Serge OUOBA,  Bunthen E, Ko KO, Tomoyuki AKITA, Shuichi KANEKO, Tatsuya KANTO, John W. WARD, Junko TANAKA, The 31st Conference of the Asian Pacific Association for the Study of the Liver (APASL 2022), 2022/04/03, Without Invitation, English, the Asian Pacific Association for the Study of the Liver, Seoul (Korea)
  24. Prevalence and genotype distribution of hepatitis B among pregnant women in Siem Reap province, Cambodia, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka, The 31st Conference of the Asian Pacific Association for the Study of the Liver (APASL 2022), 2022/04/03, Without Invitation, English, Asian Pacific Association for the Study of the Liver, Seoul (Korea)
  25. TOTAL NUMBER OF HCV PATIENTS TREATED WITH DAAS IN JAPAN USING IQVIA DATABASE FROM 2014 TO 2019, Masayuki Ohisa , Akemi Kurisu , Tomoyuki Akita , Shintaro Nagashima , Sherzad Tuychiev Tairovich , Md. Razeen Ashraf Hussain , Serge Ouoba , Bunthen E , Ko Ko , Aya Sugiyama, Junko Tanaka, Masayuki Ohisa , Akemi Kurisu , Tomoyuki Akita , Shintaro Nagashima , Sherzad Tuychiev Tairovich , Md. Razeen Ashraf Hussain , Serge Ouoba , Bunthen E , Ko Ko , Aya Sugiyama, Junko Tanaka, American Association for the Study of Liver Disease The Liver Meeting 2021, AASLD, 2021/11/12, Without Invitation, English, American Association for the Study of Liver Disease, Anaheim (USA)
  26. Prevalence of fatty liver and advanced fibrosis by using ultrasonography and FibroScan in a random sample of general population, Aya Sugiyama, Yuko Nagaoki, Megumi Mino, Hiroomi Kodama, Kanon Abe, Hirohito Imada, Serge OUOBA, Bunthen E, Ko Ko, Tomoyuki Akita, Toru Sako, Kazuaki Chayama, Junko Tanaka, Aya Sugiyama, Yuko Nagaoki, Megumi Mino, Hiroomi Kodama, Kanon Abe, Hirohito Imada, Serge OUOBA, Bunthen E, Ko Ko, Tomoyuki Akita, Toru Sako, Kazuaki Chayama, Junko Tanaka, American Association for the Study of Liver Disease The Liver Meeting 2021 AASLD, 2021/11/12, Without Invitation, English, American Association for the Study of Liver Disease, Anaheim (USA).
  27. Simulation for burden of hepatitis B and C in Japan until 2030, under the appearance of drug curable HBV, TomoyukiAkita,AkemiKurisu,MasayukiOhisa,AyaSugiyama,KoKo,ShintaroNagashima,JunkoTanaka, TomoyukiAkita,AkemiKurisu,MasayukiOhisa,AyaSugiyama,KoKo,ShintaroNagashima,JunkoTanaka, the Japan Society of Hepatology (JSH) International Liver Conference 2021., 2021/10/02, Without Invitation, English, the Japan Society of Hepatology (JSH), Fukuoka (Japan)
  28. Liver biopsy implementation rate for diagnosis of NASH in Japan - analysis for big data of health insurance claims-., Aya SUGIYAMA, Akemi KURISU, Junko TANAKA, Aya SUGIYAMA, Akemi KURISU, Junko TANAKA., the Japan Society of Hepatology (JSH) International Liver Conference 2021, 2021/10/02, Without Invitation, English
  29. Sero-epidemiological evaluation for micro-elimination of viral hepatitis in three model areas in Hiroshima, Aya Sugiyama, Megumi Mino, Hiroomi Kodama, Yuko Nagaoki, Kanon Abe, Hirohito Imada, Serge OUOBA, Bunthen E, Ko Ko, Tomoyuki Akita, Toru Sako, Junko Tanaka, the Japan Society of Hepatology (JSH) International Liver Conference 2021, 2021/10/02, Without Invitation, English, the Japan Society of Hepatology (JSH), Fukuoka (Japan)
  30. The relationship between the frequency of drinking and incidence of fatty liver in Japanese cohort undergoing health checkups during the period 2008-2019., Aya SUGIYAMA, Akemi KURISU, Serge OUOBA, Bunthen E, Ko KO, Anvarjon RAKHIMOV, Md Razeen Ashraf HUSSAIN, Tomoyuki AKITA, Takayuki HARAKAWA, Toru SAKO, Makoto KOSHIYAMA, Junko TANAKA, Aya SUGIYAMA, Akemi KURISU, Serge OUOBA, Bunthen E, Ko KO, Anvarjon RAKHIMOV, Md Razeen Ashraf HUSSAIN, Tomoyuki AKITA, Takayuki HARAKAWA, Toru SAKO, Makoto KOSHIYAMA, Junko TANAKA, European Association for the Study of the Liver (EASL) Digital NAFLD Summit 2021., 2021/09/16, Without Invitation, English, European Association for the Study of the Liver (EASL), Online
  31. Modeling Disease Burden of Nonalcoholic Fatty Liver Disease (NAFLD) in Japan, J. Tanaka, C. Estes, A. Sugiyama, A. Kurisu, A. Rakhimov, K. Ko, T. Akita, H. Razavi., J. Tanaka, C. Estes, A. Sugiyama, A. Kurisu, A. Rakhimov, K. Ko, T. Akita, H. Razavi., EASL International Liver Congress 2021, 2021/06/23, Without Invitation, English
  32. Existence of hepatitis B surface protein mutations and other variants: Demand for hepatitis B infection control in Cambodia, Ko K, Takahashi K, Nagashima S, Yamamoto C, Ork V, Sugiyama A, Akita T, Ohisa M, Chuon C, Md Hossain S, Mao B, Tanaka J, APASL(Asian Pacific Association for the Study of the Liver 2020), 2020/03/06, Without Invitation, English, Indonesia, preprint
  33. The relationship between the frequency of drinking and incidence of fatty liver in Japanese cohort undergoing health checkups during the period 2008-2019., Aya SUGIYAMA, Akemi KURISU, Serge OUOBA, Bunthen E, Ko KO, Anvarjon RAKHIMOV, Md Razeen Ashraf HUSSAIN, Tomoyuki AKITA, Takayuki HARAKAWA, Toru SAKO, Makoto KOSHIYAMA, Junko TANAKA, European Association for the Study of the Liver (EASL) Digital NAFLD Summit 2021., 2021, Without Invitation, English, Online, preprint
  34. Modeling Disease Burden of Nonalcoholic Fatty Liver Disease (NAFLD) in Japan, J. Tanaka, C. Estes, A. Sugiyama, A. Kurisu, A. Rakhimov, K. Ko, T. Akita, H. Razavi, European Association for the Study of the Liver (EASL) The Digital International Liver Congress™ 2021, 2021, Without Invitation, English, Online
  35. EPIDEMIOLOGICAL ASSESSMENT OF THE INTERVENTIONS FOR ELIMINATION OF MOTHER-TO-CHILD TRANSMISSION OF HEPATITIS B VIRUS IN JAPAN, Junko Tanaka, Aya Sugiyama, Ko Ko. Chikako Yamamoto, Shintaro Nagashima, Masayuki Ohisa, Tomoyuki Akita, The Liver Meeting 2019 AASLD, 2019/11/09, Without Invitation, English, AASLD, Boston, USA, preprint
  36. Systematic Review and Meta-analysis on prevalence of Hepatitis B and C infection in Myanmar, Japan Digestive Disease Week, 2018/11/02, Without Invitation, English
  37. Public awareness activities on hepatitis virus screening in Hiroshima prefecture and their effectiveness, Mino M, Sugiyama A, Tanaka J, Japan Digestive Disease Week, 2018/11/02, Without Invitation, English
  38. A 18 years followed-up cohort study on long term prognosis related to hepatitis virus infection among hemodialysis patients in Hiroshima, Ko Ko, Shintaro Nagashima, Chikako Yamamoto, Channarena Chuon, Mutaov Boburjon, Juraev Jasur, Junko Matsuo, Keiko Katayama, Aya Sugiyama, Kazuaki Takahashi, Junko Tanaka, The Asian Pacific Association fot the study of the Liver Single Topic Conference, 2018/05/11, Without Invitation, English
  39. False-positive reactions of anti-HCV after aortic replacement surgery, Tatsuya Murata, Kayoko Yamamoto,Tatsuhito Fukuoka,Seisi Mizuno,Aya Sugiyama, Junko Tanaka, The Asian Pacific Association for the study of the Liver-Single Topic Conference, 2018/05/11, Without Invitation, English
  40. The research of acquisition HBsAb after HB vaccination among 832 medical and dental students, Shintaro Nagashima, Chikako Yamamoto, Ko Ko, Chuon Channarena, Aya Sugiyama, Tomoyuki Akita, Keiko Katayama, Junko Tanaka, The Asian Pacific Association for the study of the Liver-Single Topic Conference, 2018/05/11, Without Invitation, Japanese
  41. The research of acquisition HBsAb after HB vaccination among 832 medical and dental students., Nagashima S, Yamamoto C, Chuon C, Sugiyama A, Akita T, Katayama K, Tanaka J, Asian Pacific Association for the Study of the Liver 2018 (APASL), 2018, Without Invitation, English
  42. A 18-year followed-up cohort study on long term prognosis related to hepatitis virus infection among hemodialysis patients in Hiroshima., Ko K, Nagashima S, Yamamoto C, Chuon C, Boburjon M, Jasur J, Sugiyama A, Matsuo J, Katayama K, Takahashi K, Tanaka J, Asian Pacific Association for the Study of the Liver 2018 (APASL), 2018, Without Invitation, English, Yokohama
  43. Prevalence of cerebrovascular and heart disease among 996,637 employees based on medical claim and health checks data in Japan, Masayo Yamato,Masayuki Ohisa, Aya Sugiyama,Junko Tanaka, The 21st International Epidemiological Association (IEA) World Congress of Epidemiology (WCE2017), 2017/08/19, Without Invitation, English
  44. Prevalence of cerebrovascular and heart disease among 996,637 employees based on medical claim and health checks data in Japan., Masayuki Ohisa,, Aya Sugiyama, Masayo Yamato, Junko Tanaka, The 21st International Epidemiological Association (IEA) World Congress of Epidemiology (WCE2017), 2017, Without Invitation, English
  45. One-year prevalence of cerebrovascular and heart diseases among 996,637 employees based on medical claim and health checks in Japan, Asia-Pacific Academic Consortium for Public Health(The 48th APACPH ), 2016/09/16, Without Invitation, English, Tokyo, published
  46. One-year prevalence of cerebrovascular and heart diseases among 996,637 employees based on medical claim and health checks in Japan., Arata Mathushima, Hiroyuki Aizu, Masayo Yamato, Masayuki Ohisa, Basilua Andre Muzembo, Mami Yamashita, Aya Sugiyama, Masayasu Yoneda, Yukihito Higashi, Junko Tanaka, The 48th Asia-Pacific Academic Consortium for Public Health (APACPH), 2016, Without Invitation, English, Tokyo
  47. Sero-epidemiological study of viral hepatitis infections among 2,285 employees in Hiroshima, Japan., Yamamoto C, Fujii T, Kaishima T, Nagashima S, Shintaku Y, Sako T, Yamato M, Sugiyama A, Katayama K, Tanaka J, Asian Pacific Association for the Study of the Liver 2016 (APASL), 2016, Without Invitation, English
  48. Characteristics of inspiratory and expiratory reactance in idiopathic pulmonary fibrosis., Sugiyama A, Hattori N, Haruta Y, Nakagawa M, Iwamoto H, Ishikawa N, Fujitaka K, Murai H, Kohno, 18th congress of the Asian pacific society of respirology, 2013/11/11, Without Invitation, English, Yokohama, Japan
  49. Liver biopsy implementation rate for diagnosis of NASH in Japan - analysis for big data of health insurance claims-., Aya SUGIYAMA, Akemi KURISU, Junko TANAKA, the Japan Society of Hepatology (JSH) International Liver Conference 2021, Without Invitation, English, Fukuoka, preprint
  50. Sero-epidemiological evaluation for micro-elimination of viral hepatitis in three model areas in Hiroshima., Aya Sugiyama, Megumi Mino, Hiroomi Kodama, Yuko Nagaoki, Kanon Abe, Hirohito Imada, Serge OUOBA, Bunthen E, Ko Ko, Tomoyuki Akita, Toru Sako, Junko Tanaka., the Japan Society of Hepatology (JSH) International Liver Conference 2021, Without Invitation, English, Fukuoka, preprint
  51. Prevalence of fatty liver and advanced fibrosis by using ultrasonography and FibroScan in a random sample of general population., Aya Sugiyama, Yuko Nagaoki, Megumi Mino, Hiroomi Kodama, Kanon Abe, Hirohito Imada, Serge OUOBA, Bunthen E, Ko Ko, Tomoyuki Akita, Toru Sako, Kazuaki Chayama, Junko Tanaka, American Association for the Study of Liver Disease The Liver Meeting 2021(AASLD), Without Invitation, English, Anaheim (USA), preprint
  52. False-positive reactions of anti-HCV after aortic replacement surgery., Murata T, Yamamoto K, Fukuoka T, Mizuno S, Sugiyama A, Tanaka J, Asian Pacific Association for the Study of the Liver 2018 (APASL)., Without Invitation, English
  53. Epidemiological study on age-sex stratified prevalence of HBV, HCV and HAV in 1200 random samples from general population and employees., C.Yamamoto, M.Yamashita, S.Nagashima, T.Fujii, A. Sugiyama, M.Ohisa, T.Akita, K.Katayama, J.Tanaka, 24th International Symposium on Hepatitis C virus and related Viruses., Without Invitation, English, Hyannis (USA)

Awards

  1. 2022/09/02, Investigator Award, President, the Asian Pacific Association for the Study of the Liver (APASL) Oncology 2022 Takamatsu, Sero-epidemiological study on HBV and HCV infection in elderly care facility staff and residents in Japan
  2. 2013, APSR2013 Awards., Asian pacific society of respirology

External Funds

Acceptance Results of Competitive Funds

  1. Core-to-core program B, International Epidemiological Research Hub Aimed at Hepatitis B Virus Elimination in Asia and Africa, 2024, 2026
  2. JSPS Core-to-Core Program B, International network for epidemiology researcher to achieve SDGs goal in hepat itis B virus elimination, 2021, 2021
  3. 2021, 2021
  4. 2021, 2023
  5. 2017, 2017
  6. KAKENHI(Grant-in-Aid for Scientific Research (C)), 2019, 2021
  7. JSPS Core-to-Core Program B, International network for epidemiology researcher to achieve SDGs goal in hepat itis B virus elimination, 2022, 2022
  8. JSPS Core-to-Core Program B, International network for epidemiology researcher to achieve SDGs goal in hepat itis B virus elimination, 2023, 2023

Social Activities

Organizing Academic Conferences, etc.

  1. JSPS Core-to-Core Program Asia-Africa Science Platforms International Symposium 2022, 2022/07, 2022/07
  2. Seminar on international collaborative research on viral hepatitis, 2022/03, 2022/03
  3. Seminar on international collaborative research between Japan, Cambodia, and Burkina Faso, 2021/12, 2021/12
  4. JJSPS Core-to-Core Program Asia-Africa Science Platforms International Seminar, 2022/09, 2022/09
  5. JSPS Core-to-Core Program Asia-Africa Science Platforms International Seminar Now and Future for International Medical Education and Fostering Young Reseachers, 2022/11, 2022/11

Other Social Contributions

  1. Hiroshima University and University of Glasgow International Seminar 2024, Next-Generation Well-being in a Knowledge-Intensive Society: Exploring New Research and Development Opportunities through the Integration of Diverse Fields such as Economics, Engineering, Ethics, Healthcare, and Prevention, and Their Future Prospects, 2024/04/04, Organizing Member, Seminar or workshop, Researchesrs
  2. JSPS Cor- to-Core Program Asia-Africa Science Platforms International seminar 2024, JSPS Cor- to-Core Program Asia-Africa Science Platforms International seminar 2024, 2024/02/23, Planner, Seminar or workshop, Researchesrs