HappySqurriel on 27 March 2012
Vaccination against illnesses that are likely to kill or disable you are good things ...
Healthy people with little access to high risk individuals getting vaccinations against minor strains of nuisance illnesses (like most flu-vaccinations) are mostly valueless. The reason for this is that these vaccinations only protect you against a single strain (or a small number of strains) of an illness, there can actually be multiple active strains of a virus in a region, and a large portion of the illnesses people experience are actually related to completely unrelated viruses. Essentially, you may be able to prevent yourself from being sick with a minor virus once every 4 to 10 years if you are vaccinated every year.
