In 99.75% of the cases (from what I'd read), the only common vaccine reaction was injection site pain. I had it myself: couldn't raise that arm above my head the first evening, no pain at all the second day. I didn't have any reaction except for the injection site pain. From the length of the needle, I'm pretty sure she hit a lung on the way in.
Other reactions include common flu symptoms, which faded in 1 to 3 days for nearly everyone. Adverse reactions are in the parts-per-million range, less likely than you being struck by lightning. Given 1 probable death per 124 million doses for a fatal reaction, your risk is minuscule compared to your risk of NOT vaccinating: about 1 in 1000 dead. You don't need to be a math wizard to see those odds.
On the plus side, people in Israel that have been the unlucky 5% and got COVID
after vaccination all had mild cases so far, and none needed hospitalization. Israel has nationalized medicine, and they're tracking EVERYTHING. The USA isn't tracking shit, other than the few adverse reactions.
I'm in the 'high risk' group for a handful of reasons, so I vax'd as soon as possible in late January. However, there's a slim chance I have a pre-existing immunity. 2003: SARS-1 hits China and Taiwan. 2004: SARS-1 contained. 2006: I get an unknown viral lung infection on a plane out of Asia that the CDC couldn't identify, with symptoms like COVID pneumonia - it lasted a month. March 9, 2020 COVID hits Dallas. March 25, I get a moderate fever for 4 days & crap in my lungs. Nasal swab tests negative. Thanksgiving, I get another fever for 32 hours and more crap in my lungs, again negative on the nasal swab, and IgM-spike antibody test is also negative. Feb 2 another fever for 2 hours and crap in my nose (but not lungs this time), no test.
There are a total of 24 different types of antibodies that they
could look for and only
1 that they
commonly look for, but what they
can't test for are antibodies with a cross-reactivity to COVID. From the rapid immune response, I'm proof against
something(s) on 3 occasions, and the reaction is getting
faster. There's still
zero influenza in Dallas, so it's likely not that. Could be pneumonia: I had both shots 2 & 3 years ago, but it's pretty rare outside of a hospital. My bet is I've been exposed to COVID 3 times, with minimal results. COVID is rampant all over Dallas (about 1 in every 80 people), and is the most probable infection. By the odds we ought to have 8 or 9 pre-symptomatic or asymptomatic people at work every day. I'm out among them EVERY day.