a screening project to check temperatures and symptoms at U.S. airports caught fewer than 15 cases out of 675,000 travelers.
It’s not known how many cases were missed, just that very few were detected.A separate study published Wednesday in the New England journal reports on an outbreak last spring on the aircraft carrier USS Theodore Roosevelt.
Among the crew of 4,779, mostly young people, 1,271 became infected; 77% did not show symptoms when diagnosed and 55% never developed any.The case shows that “young, healthy persons can contribute to community spread of infection, often silently,” Dr.
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