You seem to have a bunch of knowledge on the subject. Can you explain where you have this knowledge from and maybe explain a little bit more? For example I wa

You seem to have a bunch of knowledge on the subject. Can you explain where you have this knowledge from and maybe explain a little bit more? For example I wasn't even aware that actual method of vaccination makes any difference and I don't understand how or why exactly. I just thought we inject into muscle purely because it is convenient and maybe because it would not survive trip through digestive tract.