Sentences with phrase «people cowpox»
Giving people cowpox to prevent smallpox was an early form of vaccination.
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This can be done by presenting the immune system with weakened germs (polio in people, distemper in dogs), killed or inactivated germs (rabies for dogs, horses, and people, some Lyme disease vaccines for dogs); parts of germs (newer Lyme vaccines for dogs and Rabies vaccines for cats); or similar germs (early use of cowpox to prevent smallpox in people, measles vaccine to prevent distemper in dogs).