Sporadic outbreaks of healthcare-associated COVID-19 infection in a highly-vaccinated inpatient population during a community outbreak of the B.1.617.2 variant: The role of enhanced infection-prevention measures

Sporadic clusters of health care-associated COVID-19 infection occurred in a highly vaccinated health care workers and patient population, over a 3-month period during ongoing community transmission of the B.1.617.2 variant. Enhanced infection-prevention measures and robust surveillance systems, including routine-rostered-testing of all inpatients and staff and usage of N95-respirators in all clinical areas, were insuffi-cient in achieving zero health care-associated transmission. The unvaccinated and immunocompromised remain at-risk and should be prioritized for enhanced surveillance. (c) 2022 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

Automated summary

Sporadic clusters of COVID-19 infection occurred in a highly vaccinated health care workers and patient population, despite enhanced infection-prevention measures. The unvaccinated and immunocompromised individuals remain at risk and should receive enhanced surveillance.