The country’s most notable healthy carrier of a deadly disease, Mary Mallon, is back – not in person, but as a hashtag: #TyphoidMary.
In the current pandemic, people may unknowingly harbor and spread the coronavirus before they feel sick, largely because it has an incubation period of between two and 14 days. The Centers for Disease Control and Prevention now says that one in four people could be asymptomatic carriers, never showing symptoms even as they infect others.
But there are also those who, knowing they could be carriers, refuse to cover their mouths or practice social distancing. They include the spring breakers who crowded Florida beaches and the protesters gathering in some state capitals.
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