Government Risks Male Sterility As Mumps Vaccine Fails

Two new medical papers in Vaccine and Eurosurveillance respectively show this 10th April 2009 Daily Mail story - Students suffering as cases of mumps treble - is wrong about the reasons for adult mumps outbreaks.

The new medical papers show:-

  • the mumps vaccine is failing - with vaccinated individuals catching mumps as adults
  • but unvaccinated individuals are not

Mumps in adults but not children can cause an atrophied testicle and (rarely) male sterility. Mumps outbreaks in older individuals is a known effect of introducing vaccination. It pushes childhood diseases into the adult population. [A known concern with chickenpox vaccine is serious shingles outbreaks in the older population.]

Children who catch mumps naturally gain lifelong immunity but are at no risk of atrophy or sterility. Mumps vaccination was not recommended by the BMA, JCVI and Royal Pharmaceutical Society of Great Britain from at least 1974 and prior to the 1988 introduction of the MMR [see below].

A reason unvaccinated individuals are not developing mumps as adults is that they caught natural mumps as children and this may have been asymptomatic [ie. they showed no symptoms].  Asymptomatic infection is a known phenomenon and becomes more common as the severity of infectious diseases wanes in the population over time.

In contrast, the hypothesis put by the authors of the paper cited below makes little sense - they suggest the unvaccinated are not catching mumps as adults [when the vaccinated are] because of high vaccination uptake rates.  If that were the case then the vaccinated would not be catching mumps as adults either.

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