Infections & Immunity
How long is a cold contagious?
Asked 2 days ago 4 views 3 answers
How long should I stay home with a cold so I do not infect colleagues?
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Usually from about a day before symptoms until 5–7 days after onset, with peak spread in the first 2–3 days. Children may shed longer. Hand hygiene and staying home during the worst days do more than masks alone.
answered 2d ago•
Shalini Rao
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Peak shedding is in the first 2-3 days, which is when staying home makes the biggest difference.
answered 2d ago•
Devendra Joshi
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Hand hygiene matters because rhinovirus spreads readily via surfaces and self-inoculation to the eyes and nose, not only by droplets.
answered 2d ago•
Nandini Krishnan
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