Lateral flow tests did not reduce the number or scale of Covid-19 outbreaks in England’s care homes, a study into the effects of testing staff and visitors has found.

The results, published through the Social Science Research Network, showed that six of the 11 care homes that piloted rapid tests had outbreaks of Covid-19 and that only one had a positive result from lateral flow testing before the outbreak. The findings have not yet been peer reviewed.