You will be seeing reports from the U.K. that a couple of people in the first group to get the Pfizer Covid-19 shot there had a bad reaction. Because the press likes bad news, you may not be given what broadcaster Paul Harvey called "the rest of the story." Here it is from The Wall Street Journal.
The two people are NHS workers, part of the first tranche to receive the vaccine in line with front-line staff having initial access. Each of them carried an adrenaline auto-injector to deal with their allergies.
The agency said that the vaccination had triggered an anaphylactoid reaction in the two people shortly after they received the vaccine. Such reactions are triggered sometimes by drugs such as aspirin, certain anti-inflammatory drugs and opiates.
Translation: the two who had a bad reaction are people with a history of extreme, life-threatening allergic reactions. Such people carry adrenaline pens and in almost all cases know they have to be careful. It is likely that if you've gotten flu shots yearly with few problems, you'll have few problems with the Covid jab.
Some have been critical of our government because Britons are getting the vaccinations first. Actually, letting them take a slight lead is giving our health system preliminary data about the frequency and type of "issues" with the new vaccine. It's the proverbial blessing in disguise.