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TallSilhouette said:
SvennoJ said:

What is the difference between the first and second shot? I've heard it a lot that the first dose hardly gives a reaction then the second dose hits like a truck. My dad had the same thing with his second dose.

Don't remember which manufacturer you said you got, but my first shot of Moderna gave me a sore shoulder for a couple days while the second shot did the same along with some mild flu like symptoms for just as long.

She got Pfizer both times. They say it's safe and maybe even more beneficial to mix and match them, Moderna as the second shot. I'm just wondering if the second dose is different, more potent maybe. Or if they're simply separating appointments to get more first doses out. They ran out of Pfizer today where my wife was. She was one of the last ones to get Pfizer, but they still had plenty Moderna left.

This says they are identical, however it also says you can't mix Moderna and Pfizer (perhaps he means in the syringe?)
https://www.king5.com/article/news/verify/verify-first-second-covid-vaccine-the-same/281-0b837bea-dc76-49ea-ab42-7d7c98a8b45c

Just love the daily conflicting information campaign :) Here it's up to 4 months between shots, elsewhere it's max 6 weeks. I guess your immune system might react more 'violently' against a second dose.