WHO committee: No evidence AstraZeneca vaccine causes blood clots

NEWS 19.03.2021 19:15
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Current available data does not indicate that recent reported blood clots following the administration of AstraZeneca’s Covid-19 vaccine are connected to the vaccine, the World Health Organization’s Global Advisory Committee on Vaccine Safety said Friday.

The committee concluded that data “do not suggest any overall increase in clotting conditions such as deep venous thrombosis or pulmonary embolism following administration of Covid-19 vaccines.”

The committee noted that people naturally develop blood clots, and Covid-19 infection can also cause them. It said observed rates of these events have actually been lower than expected. Just because someone suffers a blood clot and was also recently vaccinated does not mean the vaccine caused the clot, the committee said.

“A causal relationship between these rare events has not been established at this time,” said the committee.

The committee says it will continue to review vaccination data and update guidance as necessary. It said health authorities should continue to keep a careful watch.

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