A cold virus enters in a body through mouth or nose, but there are some reasons the person is responsible himself for illness. The virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. But it also spreads by direct contact with someone who has a cold or by using shared things, such as utensils, towels, toys or telephones. Touch the eyes, nose or mouth after such contact or exposure, the person must catch a cold.
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