US: Alaska health care worker has allergic reaction to Covid-19 vaccine

Health officials in Alaska reported Wednesday that a health care worker had a severe allergic reaction to a COVID-19 vaccine within 10 minutes of receiving a shot. U.S. health authorities warned doctors to watch for rare allergic reactions when they rolled out the first vaccine, made by Pfizer and Germany’s BioNTech. Britain reported a few similar cases a week earlier. That’s why vaccine recipients are supposed to be observed after getting the shot, in case they need immediate treatment.