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is a cold still contagious after four days is a cold still contagious after 4 days is a cold contagious after four days is my cold still contagious after 4 days is a cold sore contagious after 4 days is a cold still contagious after a week is a cold still contagious after 5 days is a cold contagious after 4 days how long are you not contagious after a cold are you still contagious after a cold
