"Many health professionals advocate the use of the vaccine by asserting that the decline in pertussis over the last 100 years is attributed to the pertussis vaccination. This is false. Pertussis rates plummeted by 79% between 1900-1935. The pertussis vaccine was not introduced until 1940. A math lesson would be helpful."
That's my favorite part of that excellent article.
Gotta love how the medical establishment underestimates the common man's intelligence.