Harvard Health Tips

Cold symptom duration

Cold symptoms generally last about one week, and they?re usually worst on days two to four of your illness. You are most likely to pass a cold onto others during the first 24 to 48 hours after you get infected. You probably won't even realize you have a cold until two to three days after you pick up the virus, so at the time you?re most contagious, you probably wouldn?t even know you are…

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