I was hammered by allergies before I had any shots. After the second shot my allergies got a lot better. Probably totally cured my allergies. Magic.

Except it didn't because past week or so they've been back again.

The second Pfizer shot made my allergies better for about two days. They're back :(

Could it be because the immune system is busy with something else than fighting harmless agents ?

It’s a known strategy.

One guy infested himself with various worms to give his immune system something productive to do.

I myself didn’t really eat for a month once. That ended a multi month long flare. Idea is it kills off immune system for awhile.

Your body has a lot of possible immune responses. Runny nose, inflammation, fever. My guess is that it just switches strategies to something less annoying.

It hadn't occurred to me that the two could be related, but my allergies were pretty quiet until I got the first shot, then it was like I'd just motorboated a vase full of pollen.

Again, could just be timing.

Second shot in a week, so we'll see if it happens again!

cmon guys it's mid may, it's peak grass pollen season (in the northern hemisphere)... that has nothing to do with vaccines. smh, anectdotal this, anectdotal that

Anecdotal, yes: I've never had allergies before (at least not ones I acknowledged) and now that I'm fully vaccinated, I've got crazy responses. Interesting nonetheless.

Are you saying you not only had an allergic response afterwards, but that your new allergies persist to this day? If so, very interesting. I wonder if a severely-heightened immune response could cause your body to sensitize to otherwise harmless agents if the conditions are right?

Which shot did you get? The different vaccines also use different adjuvants (or even none in case of BionTech), so maybe that also plays a role.

Fascinating - that was my experience as well. But I can't say whether it's just been an especially bad allergy season in general.