According to Newsweek, a Pfizer vaccine caused a severe allergic reaction. The reaction occurred in a New York City health care worker. The patient was treated, and now he is in a stable condition.
In total, the side effect has already appeared in seven U.S. citizens – such data is given by the Center for Disease Control and Prevention. Specialists will conduct tests to understand the causes of the allergy. The studies will involve hundreds of subjects with a history of asthma, respiratory disease and sensitivity to any allergens.