your point is well taken.

your point is well taken.
by NDWahoo (2019-03-19 10:10:55)

In reply to: I disagree... posted by ufl

However, I would posit that you can see the effects of vaccination by simply asking anyone who got measles in this outbreak whether they had the measles vaccine.

Or asking everyone you know if they've ever had polio.

Replies:

True but - ufl 2019-03-19 10:13:50