Anaphylaxis is an over-reaction of the body’s immune system, which health specialists describe as severe and sometimes life-threatening.
Britain hailed ”V-Day” when it became the first country to roll out the Pfizer-BioNTech COVID-19 vaccine. Yet, as first mover, it has also become the first to report cases of adverse reactions, allowing other nations to watch and learn. Officials from around the world are keen for British authorities to give them as much information as possible about the two reported cases of anaphylaxis among thousands of people inoculated since mass-vaccination began on Tuesday.
Anaphylaxis is an over-reaction of the body’s immune system, which health specialists describe as severe and sometimes life-threatening. While such allergic reactions are rare in any individual vaccine recipient, they are not unusual during large-scale rollouts, scientists, experts and industry figures said.
The reports nonetheless led to Britain’s Medicines and Healthcare products Regulatory Agency (MHRA) beefing up its guidance for the shot at midnight leading into Thursday, specifically warning that anyone with a history of anaphylaxis should not take it.