I'm not sure how the timeline matters, the point was that is some circumstances vaccines have been more beneficial than natural immunity, because of the price of natual immunity to some deseases. And it took until 1994 to eradicate because smart-ass young parents decided vaccines were "bad"...
That's silly -- where would we be without the Polio Vaccine -- us greybeards remember that scourge that was stopped in its tracks by a vaccine. To be naturally immune was to be crippled -- too high a price.
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Manson .357 SIG Go/NoGo Set: $33 + $3 to mail.
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