@drphyto @bluehatman See now there you have gone back to complete BS sadly. A brief moment of clarity in the storm!
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Replying to @drphyto
@drphyto@bluehatman Some vaccines wane. Most don't. Pertussis is probably the best example.2 replies 0 retweets 0 likes -
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Replying to @bluehatman
@bluehatman@drphyto Acellular pertussis vaccine has waning protection (est. 10-20 yrs) whereas cellular was lifetime protection.6 replies 0 retweets 0 likes -
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Replying to @drphyto
@drphyto @MissyDemeanour @bluehatman Herd immunity is difficult to reach but ultimately a rather simple theory.
2:07 AM - 7 Jan 2016
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