Top 1 D.A. Henderson Quotes

#1. Twenty orphans, one of whom was vaccinated, were put on board a ship. On the eighth day, when a pustule had developed, a second orphan was vaccinated, and so on. When the ship reached its destination, the transfer of vaccinia was made to local residents and the vaccination chain continued.

D.A. Henderson

D.A. Henderson Quotes #614444

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