A resident receives a dose of AstraZeneca COVID-19 vaccine at a vaccination site in Cornella, Spain, April 7, 2021. The European Medicines Agency (EMA) confirmed on Wednesday that the occurrence of blood clots with low blood platelets are strongly associated with the administration of AstraZeneca COVID-19 vaccine, but should be still listed as very rare side effects. (Photo by Joan Gosa/Xinhua)
