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Measles
Never mind SARS or MERS, worry about measles
Never mind SARS or MERS, worry about measles

As Americans head off on summer vacations this year, federal health authorities are keeping a wary eye out for an unwanted traveler: one of the most contagious infectious diseases in the world. The microscopic droplets that spread this virus can remain suspended in the air for up to two hours, and virtually all of those without immunity who are exposed will catch it. Most of those who become ill will, after an incubation period that ranges from eight to 12 days, develop a fever and a characteristic rash. Some patients, with children being the most vulnerable, will develop pneumonia or encephalitis, which can lead to brain damage or death. I'm talking about measles. This...

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