This article assumes that all vaccines are equally effective and that none have side effects. This is false assumption. The widely promoted flu vaccine is often ineffective but still has side potentially dangerous side effects. I believed in the flu vaccine and was vaccinated for many years. Five years ago I had a serious reaction to the vaccine. I later found out that the vaccine that year had a larger amount of adjuvant, a chemical added to the vaccine as a booster. I have not taken the flu vaccine since then and only got the flu one year.