Word: rhinoviruses
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Dates: during 1986-1986
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...that virus often lasts for decades, or even a lifetime. Then why does the common cold return again and again? One reason, scientists explain, is that colds can be caused by any one of hundreds of strains of bugs, most of them belonging to a group called the rhinovirus. A new cold can be brought on by a strain the immune system has not previously encountered...