Vaccines are effective enough at preventing severe Covid-19 that there is no current need for the general population to be given third doses, according to a report in The Lancet published today.
Some countries have started offering extra doses over fears about the much more contagious Delta variant, causing the World Health Organization to call for a moratorium on third jabs amid concerns about vaccine supplies to poorer nations, where millions have yet to receive their first jab.
But a report by scientists, including from the WHO, concluded that even with the threat of Delta, "booster doses for the general population are not appropriate at this stage in the pandemic". Latest Coronavirus news The authors, who reviewed observational studies