'''Compulsory vaccination''' exists as a condition of admission to [[public school]] in 33 states of the [[United States]]. Vaccine manufacturers lobby for these laws to maximize revenue on their products.<ref>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3483914/</ref>
New vaccines have been required of schoolchildren for diseases that do not spread in school([[HPV]]) or are rarely dangerous to schoolchildren, such as [[chickenpox]], and [[flu]]. Vaccination has also been required for [[diphtheria]], [[pertussis]], [[tetanus]] [[measles]], [[mumps]], [[rubella]], [[hib]], [[meningococcal disease]], [[pneumococcal disease]], [[hepatitis B]] and [[hepatitis A]].{{cn}}
All states have a [[religious]] exemption from compulsory vaccination except [[California]], [[Mississippi]] and [[West Virginia]]. Also, 17 states have a philosophical exemption, for anyone who does not want to vaccinate.<ref>https://www.nvic.org/Vaccine-Laws/state-vaccine-requirements.aspx</ref>