An epidemiologist has raised concerns about the validity of lateral flows and encouraged the government to review its guidance.
Irene Peterson, a professor of epidemiology at University College London, has urged the government to advise people not to use lateral flow tests until just before they meet up with their friends and family.
Current guidance from the government recommends taking a test “if you will be in a high-risk situation that day”. Peterson, said official advice should be updated as those infected with Omicron “may switch from being non-infectious to infectious within hours”.
It comes amid reports a lockdown is being considered from December 27 to combat the growing surge in cases. However, Prof Petersen told The Sunday