Originally posted by BigMackCam .... I spoke to my oldest friend a few days ago... like me (and your missus) he had the Moderna Spikevax booster... and, like me, he had some joint pain. But he also had a fever, and his injection site was swollen and angrily-red for several days. Plus, he felt quite fluey. He said he wouldn't claim to have been ill, exactly, but definitely unwell. He recovered and feels great now, but clearly folks have different reactions to this vaccine. I still think it's a small price to pay, in most cases...
My booster was Cominatry/Biontech-Pfizer (as the 2 previous shots) since August.
This time for 2 days quite some pain on the left arm, strong enough so I wasn't able lying on that side. Also some joint-aches, strangly the worst on the right foot, so that part of the body being the furthest away. Now 2nd day and already better. I agree, a small price to pay.
Regarding covid and vaccination in general:
I am not a specialist on that field but I have a customer, he lives, works and teaches in Wuhan, China.
It was sheer accident, he had ordered something few years ago and then again this summer.
When I wrote the adress I got it that I actually sold something to one of the best virologists from China.
So I asked him about Covid, knowing that everything he writes will be filtered, i.e. controlled by the government.
Nevertheless he answered and with one advice he stuck his head quite out of the window:
He sees mRNA vaccination as the very best, particular Pfizer/Biontech. He recommends wearing masks (only good quality N95, no surgical masks) as soon as more people are in a room and particular in public buildings and in trains/busses + Hygiene. I didn't ask more questions because I knew his mails will be filtered, his answer corresponded with what I knew anyway (my sister and my brother are doctors of medicine as are the two sons of my brother)
Regarding antibodies:
It could well be that antibodies which react to internal virusproteins can only act, when the virus already entered the cell, i.e. has multiplied and destroyed the cell.
I don't know if the body when attacked naturally through covid can produce spike-proteins. But possibly less likely than through a vaccination with mRNA!
But the immune-system is very complex and antibodies or lack of those doesn't say much about how well one is protected. Antibody-tests will not tell you how well you are protected against covid.
A sensible article is this one:
COVID Natural Immunity: What You Need to Know | Johns Hopkins Medicine