Experts remain divided over merits of mass Covid tests in schools

Analysis: some say lateral flow tests could help cut outbreaks, but others argue they offer false reassuranceRegulator refuses to approve mass Covid testing at schools in EnglandCoronavirus – latest updatesSee all our coronavirus coverageThe education secretary, Gavin Williamson, has put mass testing for coronavirus at the heart of his strategy to reopen schools after the lockdown. It is a controversial strategy that has divided scientists. Some believe mass testing can help reduce outbrea