loading page

Current status of nosocomial COVID-19 cases in delivery facilities in Japan: Case-control study
  • +3
  • JUNICHI HASEGAWA,
  • Tatsuya Arakaki,
  • Akihiko Sekizawa,
  • Tomoaki Ikeda,
  • Isamu Ishiwata,
  • Katsuyuki Kinoshita
JUNICHI HASEGAWA
Sei Marianna Ika Daigaku
Author Profile
Tatsuya Arakaki
Showa Daigaku
Author Profile
Akihiko Sekizawa
Showa University School of Medicine
Author Profile
Tomoaki Ikeda
Mie University Graduate School of Medicine Faculty of Medicine
Author Profile
Isamu Ishiwata
Ishiwata Obstetrics and Gynecology
Author Profile
Katsuyuki Kinoshita
Seijo Kinoshita Hospital
Author Profile

Abstract

Objective: To identify the characteristics of and measures taken by Japanese medical facilities providing maternity services that have recorded cases of nosocomial infection with SARS-CoV-2, which causes coronavirus disease 2019 (COVID-19). Design: A nationwide questionnaire survey: case-control study. Setting: Medical facilities providing maternity service in Japan. Population: 1,418 medical facilities providing maternity service (65% of all delivery facilities in Japan). Methods: A nationwide questionnaire survey about nosocomial COVID-19 was conducted in July 2020. A case-control study was conducted by including medical facilities providing maternity service with (Cases) and without (Control) nosocomial COVID-19. Main outcome measures: Contributed characteristics and variables associated with nosocomial COVID-19. The number of treated pregnant women with COVID-19 until June 2020 and cases of nosocomial COVID-19 in Japan. Results: Seventy-five COVID-19-positive pregnant women were treated in 48 facilities. Responses from Nosocomial infection was reported in 4.1% of the facilities. Nine reports developed a nosocomial infection in the maternity ward or obstetric department. Variables that contributed to nosocomial COVID-19 were chest CT on admission (adjusted odds ratio [95% confidence interval], 4.76 [2.44–9.27]), PCR test for SARS-CoV-2 before delivery (2.27 [1.21–4.25]), transfer of pregnant women with fever to another hospital (0.21 [0.06–0.71]), and private clinics (0.17 [0.05–0.60]). Conclusion: Nosocomial infection is likely to occur in large hospitals that treat a higher number of patients than private clinics do. Nosocomial infection can occur even in medical facilities performing COVID-19 screening tests, such as chest CT and PCR test.