Coronavirus Health

European Medicines Agency finds AstraZeneca shot can cause rare blood clots with low platelet count

The safety committee of the European Medicines Agency (EMA) has found that the Oxford-AstraZeneca Covid-19 vaccine can cause unusual blood clots with low blood platelets, but stresses the overall benefits of the vaccine in preventing coronavirus outweigh the risks of side effects. 

“EMA is reminding healthcare professionals and people receiving the vaccine to remain aware of the possibility of very rare cases of blood clots combined with low levels of blood platelets occurring within 2 weeks of vaccination,” the agency said in a statement Wednesday. 

“So far, most of the cases reported have occurred in women under 60 years of age within 2 weeks of vaccination. Based on the currently available evidence, specific risk factors have not been confirmed.”

The EMA decision also follows a move in Germany, which last week suspended the use of the AstraZeneca vaccine in people under 60 years old after 31 reports of CVST. Twenty-nine of the 31 were women aged 20 to 63, and nine of the patients died, according to a Reuters report citing the country’s medicines regulator.EMA Executive Director Emer Cooke told a press conference Wednesday that the agency would add the clots and low platelet counts to its list of possible side effects from the vaccine, but added the safety committee “has confirmed that the benefits of the AstraZeneca vaccine in preventing Covid-19 overall outweigh the risks of side effects” and that that EMA’s recommendations for use of the vaccine were not changing.EMA’s statement called on healthcare workers and people receiving the vaccine “to remain aware of the possibility of very rare cases of blood clots combined with low levels of blood platelets occurring within 2 weeks of vaccination.””So far, most of the cases reported have occurred in women under 60 years of age within 2 weeks of vaccination. Based on the currently available evidence, specific risk factors have not been confirmed,” the statement said, though Cooke said there was no clear risk profile found when the safety committee looked at age and gender of people reporting these rare adverse reactions.

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