" The anti-vaxxer movement has swept across the world in recent years. The decision not to vaccinate children because of preconceived ideas that vaccines are harmful or wrong has led to the occurrence of measles, mumps, and other diseases that were once nearly eradicated. The number of parents jumping on the anti-vaxxer bandwagon has reached high enough heights that herd immunity is no longer effective in many areas of the world. Herd immunity refers to the ...