With the 1918-1919 flu pandemic, for instance, there is credible evidence that it was not caused by a “Spanish” strain of the flu, but rather by vaccinated American soldiers coming from a military base in Kansas, and/or increases in the Earth’s electrification as laid out by Arthur Firstenberg.
For those who wish to be truly informed. ~ BTW: I refused the 76 swine flu vaccine as a soldier, was arrested and then I resigned. They let me go, and I used the GI Bill to become a doc. ~ oz