Yes, worry, but...: Contagiousness varies among disorders and is hard to predict in individual people. A general rough estimate is that a person is contagious for seven days after the symptoms appear or at least one day after all symptoms are gone, whichever is longer. That said, there are coughing people who are no longer contagious, but there are also people that are coughing and contagious for weeks or months.
Answered 2/24/2020
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9 doctors weighed in across 2 answers
8 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
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