Until the 1960s, measles was a fact of life in the United States and the developed world. Each year, about half a million people--mostly children--would come down with symptoms that were no worse than a bad cold, except for a rash that spread over the body. Most thought it was harmless, but each year, a small percentage of those that got it died. A look into its history shows that measles has been one of history's deadliest killers, virtually wiping...
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