If you spend any time reading the antivaccination rants, you will hear about all kinds of conspiracy theories, pseudoscience, and scaremongering. Given that there is little scientific evidence that supports their beliefs, they have little choice but invent strawman arguments to make their point. One of the more amusing strategies of antivaccine cult is to claim that diseases were going away before vaccinations. These people believe, without any evidence whatsoever, that diseases like polio, measles, and chickenpox were disappearing because of better sanitation. Or better nutrition. Or something other than what really ended these diseases–vaccines. It’s a historical revisionism of a legendary level.
Admittedly, part of this belief is that people lack the cultural memory of some of these diseases. Few parents born after 1970 would remember classmates who had been stricken with polio. Few would have remember measles, mumps, or other epidemics sweeping through a school. They just don’t remember it, because vaccines introduced in the 50’s and 60’s reduced, and in the case of smallpox, eliminated the disease. Of course, there is evidence that support the theory that vaccines end diseases. But we don’t have to go back 40 or 50 years to show this happens, but we can talk about a disease that has been drastically reduced in the last few years, just because of a new vaccine.