Allergies and Itching after COVID vaccine? Announcing Research Here
Results from 64,900 vaccines: How often are allergies and itching after COVID vaccine?
We’ll take a look at how common symptoms like itching after a COVID vaccine is.
Journal of the American Medical Association Research Study: March 2021
(reference and link to the study are at the bottom of the page)
Easy-to-Read Results Summary:
– Researchers did this study based on the fact that many are nervous to get the vaccines due to having allergies themselves and all the media-hype regarding allergic reactions causes some people to avoid the vaccines.
So… what is the truth?
- Study was done at Massachusetts General Brigham (the Original Harvard hospital!)
- Studied what happened the 3 days after the first vaccine (the time of highest chances for allergy symptoms)
- 40% got Pfizer, 60% Moderna
Mild allergic reactions
- 1 out of every 50 vaccines caused mild allergic reactions (itch, hives, swelling)
- Moderna (2.2% of the shots caused mild allergy) vs Pfizer (2% of the shots): not much difference
- 98% of all people had no allergic reactions at all (that is a nice, safe number)
Significant allergic reactions (anaphylaxis)
- Occurred in 1 out of every 3700 Pfizer shots (i.e. .027% of the shots)
- Occurred in 1 out of every 4300 Moderna shots (i.e. .023% of the shots)
- In total, there were 5 anaphylactic reactions per 20,000 vaccines (that is a really safe number compared to many other drugs)
Timing for significant allergic reaction (anaphylaxis)
– The range was from immediately after the shot up to 2 hours later at the latestAnaphylaxis severity
– 7 of the 16 patients had mild skin reactions
– 9 of the 16 patients had “measurable” but not life-threatening reactions
– 3 did not seek any medical attention
– 1 went to the ICU and recovered
– 9 out of 16 patients needed an epinephrine shot (EpiPen) and all recovered
– There were no severe anaphylactic reactions (having shock or requiring intubation)
Who was most likely to get anaphylaxis?
– Out of 16 patients in total, 5 (31%) had a history of anaphylaxis
– 10 out of 16 (61%) had a history of allergies (probably not significantly different than the usual population)
“I have a history of anaphylaxis, what is my risk?”
– Assuming there were 4000 individuals with severe food or drug allergies in this group (this is the expected #)
– Only 5 out of 4000 people with a history of anaphylaxis get an anaphylactic reaction (1 out of every 800)
– Knowing that this is a group of people who are used to planning for anaphylaxis and should have an EpiPen, and who know they have to use it when exposed to a known allergen (like me when I accidentally eat shrimp), that is an incredibly low number.
– I took my EpiPen with me when I got mine. No problems! Only 1 out of every 800 times would someone need to use it
– Since the results were reported by the employees themselves, and not confirmed by doctors, we cannot ensure that these were truly anaphylactic reactions (people do tend to overestimate such responses = my opinion)
– The researchers, Harvard-famous allergy experts, stated, “… the overall risk of anaphylaxis to an mRNA COVID-19 vaccine remains extremely low”
If you have had an anaphylactic reaction in the past (like I have), I recommend:
– Just take your EpiPen and wait a while after your shot if you have had anaphylaxis before. However, don’t sweat it.
You have a higher chance of getting into a car accident on the way to the shot than you do of getting an anaphylactic reaction
Did you get your vaccine? How did you do?
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