Usually safe at 4-5d: Contagiousness varies among different "stomach viruses" and among different people, so is not easily predictable. However, one can feel safer if the sick person wakes up on Day 5 without any symptoms the preceding 4 days. If unlucky, she can still catch a virus and come down with the illness. Food poisoning is usually less contagious, but depends on the bacteria type.
Answered 1/5/2020
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A doctor has provided 1 answer
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