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(A picture of vaccine vials from Johnson and Johnson)
As per a series of tweets by the FDA, 68 lakh doses of the vaccine have been administered to patients, out of which a rare and severe type of blood clot has been reported among six of them.
The FDA states that these events appear to be extremely rare and the Centers for Disease Control and Prevention (CDC) and the FDA are already reviewing the data involving the reported blood clots, which require a treatment method different from the one normally used to treat clots.
Rare cases of blood clot were also reported in European nations after the administration of the COVID-19 vaccine developed by pharmaceutical major AstraZeneca and the University of Oxford.
"This is a very rare side effect that was first thought to be a coincidence... now studies suggest a link to the vaccine. It is still very rare and not seen, so far, in India, although there are suggestions that one or two cases are here also", AIIMS Delhi Chief Randeep Gurela has said.