June 16, 2021 : Two Cases of Contraindication to Comirnaty
© 安岡喜晴 (JoyShine)
Comirnaty, SARS-CoV-2 mRNA vaccine, seems to have more people with anaphylaxis past history coming to get a shot, than flu vaccine.
During the last two weeks in my workplace, already four cases of people with anaphylaxis past history have been confirmed, two are to contrast medium and the others are to Xylocaine.
PEG is included in both contrast medium and Comirnaty, so anaphylaxis past history to contrast medium are a major contraindication to Comirnaty, so I stopped the vaccination to them,
whereas anaphylaxis past history to Xylocaine are not a contraindication to this vaccine, so they got one dose and observation period was extended from 15 minutes to 30 minutes.
As for the flu vaccine, people with a medical history of anaphylaxis rarely come to get a shot (at least I can't remember a person with anaphylaxis history coming to get a flu shot so far),
but when it comes to the COVID vaccine, there are already four cases...does this mean that even though they have a history of anaphylaxis, they want to take a vaccine?
Looking at past anaphylaxis cases caused by Comirnaty in Japan, asthma seems to be the most common cause, and other allergies follow.
I realized again the importance of prolonging the observation period in cases with allergies.