they are not talking about the flu vaccines that are pretty much a scam as the companies make a guess about what strain of the virus (and with what mutations) is most likely to hit and make a flu shot that may or may not work. 99.999% of the population has some form of immunity to the flu and if you take the cases of people dying of it it's like 1 in 500,000 or less and often because they were already sick with something else.
the issue is the vaccination against viruses like polio, measles, cholera, leper and so on that are deadly and highly contagious. viruses that have been rendered innocuous by preventive vaccination for decades and are now making a comeback because people don't have a natural immunity to them without vaccination.
