Links for Googles 2, 3, and 4

[Bernard NebelKeymaster]

#2. Diseases prevented by vaccines   See the following links:

https://www.who.int/teams/immunization-vaccines-and-biologicals/diseases

https://www.dhs.wisconsin.gov/immunization/vpd.htm

#3. Old cemeteries. I could not find images of this, but I have been very stuck seeing this in person. Investigate it for yourself. 

#4. Vaccination history (See the following link:

         https://www.pbs.org/wgbh/nova/video/a-history-of-vaccination/

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