Retest for COVID-19 4+ weeks after symptoms first appear to curb infection risk, say researchers

People who’ve had COVID-19 should be swab tested again 4 or more weeks after symptoms first appear to minimise the risk of onward infection, suggests a large population based study in one of Italy’s former coronavirus hotspots, and published in the online journal BMJ Open. This is because SARS-CoV-2, the […]