Omicron has 'substantial ability to cause reinfection in people who have had Covid' - study

The new study estimated that the risk of reinfection for the period from November 1 to 27, when Omicron was circulating, was 2.39 higher than in the first wave of the pandemic in early 2020. File Picture: Stefan Rousseau/PA

The Omicron variant of coronavirus has “substantial” ability to cause reinfection in people who have previously had Covid-19, a study from South Africa suggests.

The research, which has not been peer-reviewed, found people who had tested positive for Covid could pick up the virus again.