Okayama University: Analysis of Infection Status and Medical Care Provision System in Okayama Prefecture (as of April 20, 2026)
Okayama University has published an analysis of the status of COVID-19 and other infectious diseases and the medical care provision system in Okayama Prefecture, based on data as of April 20, 2026. While the number of COVID-19 reports has slightly increased, the overall situation is stable. Seasonal influenza is decreasing, but Group A streptococcal pharyngitis is prevalent.
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- 📰 Published: May 4, 2026 at 08:28
- 🔍 Collected: May 3, 2026 at 23:31
- 🤖 AI Analyzed: May 3, 2026 at 23:33 (1 min after Collected)
May 3, 2026
National University Corporation Okayama University
https://www.okayama-u.ac.jp/
◆ Overview
Data on the number of reported patients and the medical care provision system (※) disclosed on the Okayama Prefecture website has been compiled, and comments have been added by volunteer experts from Okayama Prefecture. Updates are scheduled once a week.
Furthermore, we have made efforts to present the information clearly on a single sheet, referencing Tokyo's "Analysis and Summary Comments on the Latest Monitoring Items." We hope it will be useful for understanding the situation within the prefecture.
The WHO has declared the end of the COVID-19 pandemic, and normal life has returned in Japan. However, we continue to provide information with the hope that it will be helpful in understanding the infection and medical system situation in Okayama Prefecture, and for your daily infection prevention measures. Thank you for your continued support.
* After the transition to Category 5, the number of reported patients per fixed point is used.
◆ Analysis of Infection Status and Medical Care Provision System [as of Monday, April 20, 2026]
The number of reported COVID-19 cases per fixed point has slightly increased to 0.48. The situation is also generally stable nationwide.
Hospitalized patients due to COVID-19 continue to occur. Infection control measures appropriate to the situation and early diagnosis and treatment for high-risk patients are necessary.
Seasonal influenza has decreased from the previous week (0.44 reported cases per fixed point) and is settling down. Group A streptococcal pharyngitis is prevalent.
◆ Volunteer Experts from Okayama Prefecture
Yasunori Ichimura (National Institute of Health Crisis Management, Department of International Medical Cooperation)
Hideyuki Hagiya (Okayama University Hospital, Infectious Diseases Internal Medicine)
Koji Fujita (Tsuyama Chuo Hospital, General Internal Medicine / Infectious Diseases Internal Medicine)
Harushi Yamada (Okayama City Hospital, Infectious Diseases Internal Medicine)
Daisuke Yoshioka (Kawasaki Medical University, Clinical Infectious Diseases / Kawasaki Medical University Hospital, Infection Control Department)
Takashi Yorifuji (Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Epidemiology and Public Health)
(Alphabetical order)
◆ References
・Analysis of infection status and medical care provision system in Okayama Prefecture (as of March 30, 2026)
https://prtimes.jp/main/html/rd/p/000003932.000072793.html
・Analysis of infection status and medical care provision system in Okayama Prefecture (as of April 6, 2026)
https://prtimes.jp/main/html/rd/p/000003950.000072793.html
・Analysis of infection status and medical care provision system in Okayama Prefecture (as of April 13, 2026)
https://prtimes.jp/main/html/rd/p/000003964.000072793.html
◆ Related Information
・Videos created by volunteer members of the Okayama Prefecture Cluster Countermeasures Team, a useful collection for clinics and workplaces
http://www.unit-gp.jp/eisei/wp/?p=4631
・COVID-19 Vaccine Information
http://www.unit-gp.jp/eisei/wp/?p=4923
・Okayama University Hospital
https://www.okayama-u.ac.jp/user/hospital/
・Okayama University Hospital COVID-19 Aftercare Clinic
https://www.okayama-u.ac.jp/user/hospital/index377.html
・[Okayama University] Okayama University Hospital deploys a large emergency transport vehicle "Doctor Car" equipped with ECMO
https://prtimes.jp/main/html/rd/p/000000241.000072793.html
・[Okayama University] Collaboration with WHO: Dr. Hideyuki Hagiya dispatched to Papua New Guinea as a COVID-19 expert
https://prtimes.jp/main/html/rd/p/000000502.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 18) temporarily released
https://prtimes.jp/main/html/rd/p/000000290.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 19) temporarily released
https://prtimes.jp/main/html/rd/p/000000347.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 20) temporarily released
https://prtimes.jp/main/html/rd/p/000000406.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 21) temporarily published
National University Corporation Okayama University
https://www.okayama-u.ac.jp/
◆ Overview
Data on the number of reported patients and the medical care provision system (※) disclosed on the Okayama Prefecture website has been compiled, and comments have been added by volunteer experts from Okayama Prefecture. Updates are scheduled once a week.
Furthermore, we have made efforts to present the information clearly on a single sheet, referencing Tokyo's "Analysis and Summary Comments on the Latest Monitoring Items." We hope it will be useful for understanding the situation within the prefecture.
The WHO has declared the end of the COVID-19 pandemic, and normal life has returned in Japan. However, we continue to provide information with the hope that it will be helpful in understanding the infection and medical system situation in Okayama Prefecture, and for your daily infection prevention measures. Thank you for your continued support.
* After the transition to Category 5, the number of reported patients per fixed point is used.
◆ Analysis of Infection Status and Medical Care Provision System [as of Monday, April 20, 2026]
The number of reported COVID-19 cases per fixed point has slightly increased to 0.48. The situation is also generally stable nationwide.
Hospitalized patients due to COVID-19 continue to occur. Infection control measures appropriate to the situation and early diagnosis and treatment for high-risk patients are necessary.
Seasonal influenza has decreased from the previous week (0.44 reported cases per fixed point) and is settling down. Group A streptococcal pharyngitis is prevalent.
◆ Volunteer Experts from Okayama Prefecture
Yasunori Ichimura (National Institute of Health Crisis Management, Department of International Medical Cooperation)
Hideyuki Hagiya (Okayama University Hospital, Infectious Diseases Internal Medicine)
Koji Fujita (Tsuyama Chuo Hospital, General Internal Medicine / Infectious Diseases Internal Medicine)
Harushi Yamada (Okayama City Hospital, Infectious Diseases Internal Medicine)
Daisuke Yoshioka (Kawasaki Medical University, Clinical Infectious Diseases / Kawasaki Medical University Hospital, Infection Control Department)
Takashi Yorifuji (Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Epidemiology and Public Health)
(Alphabetical order)
◆ References
・Analysis of infection status and medical care provision system in Okayama Prefecture (as of March 30, 2026)
https://prtimes.jp/main/html/rd/p/000003932.000072793.html
・Analysis of infection status and medical care provision system in Okayama Prefecture (as of April 6, 2026)
https://prtimes.jp/main/html/rd/p/000003950.000072793.html
・Analysis of infection status and medical care provision system in Okayama Prefecture (as of April 13, 2026)
https://prtimes.jp/main/html/rd/p/000003964.000072793.html
◆ Related Information
・Videos created by volunteer members of the Okayama Prefecture Cluster Countermeasures Team, a useful collection for clinics and workplaces
http://www.unit-gp.jp/eisei/wp/?p=4631
・COVID-19 Vaccine Information
http://www.unit-gp.jp/eisei/wp/?p=4923
・Okayama University Hospital
https://www.okayama-u.ac.jp/user/hospital/
・Okayama University Hospital COVID-19 Aftercare Clinic
https://www.okayama-u.ac.jp/user/hospital/index377.html
・[Okayama University] Okayama University Hospital deploys a large emergency transport vehicle "Doctor Car" equipped with ECMO
https://prtimes.jp/main/html/rd/p/000000241.000072793.html
・[Okayama University] Collaboration with WHO: Dr. Hideyuki Hagiya dispatched to Papua New Guinea as a COVID-19 expert
https://prtimes.jp/main/html/rd/p/000000502.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 18) temporarily released
https://prtimes.jp/main/html/rd/p/000000290.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 19) temporarily released
https://prtimes.jp/main/html/rd/p/000000347.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 20) temporarily released
https://prtimes.jp/main/html/rd/p/000000406.000072793.html
・[Okayama University x Dental Diamond Co., Ltd.] COVID-19 Special Feature Page (Part 21) temporarily published