US plans Covid booster shots at six months instead of eight

US health regulators could approve a third Covid-19 shot for adults beginning at least six months after full vaccination, instead of the previously announced eight-month gap, the Wall Street Journal reported on Wednesday.

Approval of boosters for three Covid-19 shots being administered in the United States include those manufactured by Pfizer and partner Biontech SE. Moderna and Johnson & Johnson are expected in mid-september, the report said, citing a person familiar with the plans.

Pfizer and Biontech have already started the application process for the approval of its booster shot in people 16 and older, saying it spurs a more than three-fold increase in antibodies against the coronavirus.