[yairdoza (OP)]

I got the second COVID had (Pfizer), and I feel awful. After both jabs I had high fever for a few days a d lost work days.
Probably I had COVID in March last year, so the vaccines boosted my immunity.
Why am I getting so I'll after this vaccine?
When I get the yearly flu jab there are hardly any side effects.
Thanks for reading.

[evan_au]

Why am I getting so Ill after this vaccine?

A lot of the symptoms are due to signaling chemicals produced by your body, called interferons.
- These tell your body to prepare for a viral attack
- It shows that your immune system is working
See: https://en.wikipedia.org/wiki/Interferon

[alancalverd]

Yep, I had my second Pfizer vaccination 3 days ago. First one produced no symptoms, but yesterday was quite miserable and I decided I wasn't fit to fly. Shows that the system is working, but I think it would be worth warning folk that it can impair your performance a bit.

[Colin2B]

........but I think it would be worth warning folk that it can impair your performance a bit.

Thanks for the warning