homes in order to develop preventive strategies for protecting the frail elderly residents.
Methods An outbreak investigation involving 394 residents and 70 staff, was carried out in 4
nursing homes affected by COVID-19 outbreaks in central London. Two point-prevalence
surveys were performed one week apart where residents underwent SARS-CoV-2 testing
and had relevant symptoms documented. Asymptomatic staff from three of the four homes …