WHO: link between AstraZeneca vaccine and blood clots "unclear"

An official from the World Health Organization (WHO) said there was "no link for the moment" between the AstraZeneca vaccine and blood clots, stressing that the benefits of the vaccine were "largely still positive" compared to its risks.

"We continue to see a number of events that are rare events. There's no evidence that the benefit-risk assessment for the vaccine needs to be changed," said Rogerio Pinto de Sa Gaspar, Director of Regulation and Pre-qualification of WHO, at a press conference.

Earlier, a senior European Medicines Agency (EMA) expert said there is a causal link between the coronavirus vaccine developed by AstraZeneca and very rare cases of blood clots, although it remains unclear what the connection is and the possible causes are likewise still unknown.