As usual it depends on your case. You can have a big immune response, but still within the range your body can take, and you won’t be feeling ill. I think kids

As usual it depends on your case. You can have a big immune response, but still within the range your body can take, and you won’t be feeling ill. I think kids will often have very visible effects after vaccination, while adults in their prime are usually more solid and won’t notice much of what’s going on internally.