The company began launching combination MMR (measles, mumps and rubella) vaccines in the 1970s. Coincidentally—or not—an infertility crisis has been brewing over roughly the same time period, with dramatic declines in sperm counts and record-low fertility levels. However, few investigators seem interested in assessing whether mumps outbreaks in highly vaccinated populations of teens and young adults could be having long-term effects on fertility or other health indicators.

As described in Part I, childhood MMR vaccination has been an unmitigated disaster where mumps is concerned, deferring mumps infection to older ages and leaving adolescents and young adults vulnerable to serious reproductive complications. Public health reports show that the vast majority of mumps cases and outbreaks occur in youth who have been fully vaccinated with the prescribed two-dose MMR series, supporting a hypothesis of "waning immunity after the second dose." FDA and Centers for Disease Control and Prevention (CDC) officials even admit that mumps outbreaks in the post-vaccination era "typically involve young adults," and that vaccination is failing to protect those who are college-age and above.