The first successful rabies vaccine was successfully tested on a 9-year-old boy in France.

Louis Pasteur had been working on a rabies vaccine in France for many years, and on this day, he administered the first vaccine to a human. Joseph Meister, the 9-year-old boy, was attacked by a “mad” dog on July 4 and received the vaccination 60 hours after the attack. Meister was given a course of 13 injections over three weeks and successfully became immune to rabies.

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