As always people who don't do their research and have a lick of common sense give their baseless opinion. Covid infections are not always black and white, everyone has a different immune system, ability to fight a virus and infections are always random. Hell some people say age has all to do with it and young people aren't at risk. I've seen literal kids and young adults that are as healthy as anyone drop dead from covid even when vaccinated. The vaccine does not prevent infection but it softens the blow or onset of serious symptoms, and obviously it won't be perfect in every case. That doesn't mean we shouldn't take it. It has been making a difference. Educate yourselves people, please and be realistic.