> it can be hard to argue with them that vaccines are totally safe and effective for them That is especially hard since there is simply no way to know for sure

> it can be hard to argue with them that vaccines are totally safe and effective for them That is especially hard since there is simply no way to know for sure whether the vaccine will be "totally safe and effective for them": https://news.ycombinator.com/item?id=29206892 https://news.ycombinator.com/item?id=29206892 .