Noted: There are only about three strains of flu each season, while “there are usually 20-30 different types of rhinovirus circulating each season in one geographic area,” explains Yury A. Bochkov, an associate scientist in the department of pediatrics at the University of Wisconsin School of Medicine and Public Health. Only about 10% of those will show up again the next year. That means, Bochkov says, that public health officials “cannot predict the spectrum of rhinovirus types for an upcoming cold season.”
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