LONDON—No new cases of rare and severe blood clots following vaccination with AstraZeneca’s COVID shot have been reported in Britain in recent weeks after a decision to restrict its use in under-40s, British scientists said on Wednesday.
Vaccine-induced immune thrombocytopenia and thrombosis (VITT) is a combination of blood clots and low platelet levels which has been labelled as a rare side effect of the viral vector COVID vaccines made by AstraZeneca and Johnson & Johnson.
