Found myself dealing with an anti-vax person, who will go unnamed. He went off on me saying the vaccine was killing healthy athletes, that it wasn't even a real vaccine, and that it didn't protect you from catching the disease.
There have been several athletes and former athletes die recently, though all of those had underlying medical conditions, which is what killed them, and for many of those there was no evidence they were ever vaccinated. One died of a blood clot to the brain, which he had suffered a year before, though it failed to kill him that time. Another died of a drug overdose. Yet another had a history of heart problems and died of a heart attack. I could go on but check Politifact ot Factcheck, if you want more.
A lot of traditional vaccines used dead of weakened viruses to stimulate an immune response. The Pfizer and Moderna use mRNA which introduces a characteristic protein of Covid-19, so the body will recognize and react to that protein. In many ways that is safer, since occasionally the weakened viruses in some vaccines have caused an infection.
Many vaccines do not confer total immunity to all versions of the disease. That is why there are annual flu shots and why there are two different pneumonia shots covering multiple varieties of those diseases. What has been proven in peer reviewed scientific studies is that the Covid vaccine reduces the likelihood of catching the disease, along with strongly reducing the odds of being hospitalized or dying from it.
He also said that recovering from Covid confers greater immunity than the vaccine. Some studies have shown that to be the case, but they also showed that those who were vaccinated after recovering from Covid, had even greater immunity to it.
Everyone has to make their own choices. My wife, myself, my sister-in-law, and her husband have all been vaccinated. If you want to take your chances, it may kill you, but it may not. We don't want to take that chance.