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Possible link found between AstraZeneca vaccine, blood clots
The European Medicines Agency said a very rare side effect of the AstraZeneca COVID-19 vaccine is "unusual blood clots with low blood platelets." That's a blow to low- and middle-income countries because the vaccine is inexpensive, easier to transport and store and is also 79 percent effective at preventing infections. Boston University's Dr. Nahid Bhadelia joins Nick Schifrin to discuss.
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