Key Points

Monitoring of reports of nosocomial COVID-19, e-SIN, France, March 1, 2020, to January 14, 2022

• 30% of French healthcare facilities reported at least one episode of nosocomial COVID-19

• 73% of the reports received corresponded to clusters (at least 3 linked cases)

• 77% of HC reports were confirmed or probable nosocomial cases

• 42% of CG episodes occurred in medical wards and 36% in follow-up care and rehabilitation units, long-term care units, and nursing home sectors

• 25% of transmission scenarios were due to the failure to identify the case upon admission, and 21% were due to lapses in the implementation of infection control measures