A new study of mice confirms scientists’ suspicions that the vaccine for Lyme disease works by killing infection-causing bacteria while they’re still inside the tiny deer ticks that spread the disease.
When a tick bites a person or other mammal, it can hang on for days. The tick draws blood immediately but doesn’t inject its saliva, and thereby infect its host, for at least 2 days, says study coauthor Aravinda M.
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