Handwash, handwash, handwash.
The principal reason for the increase in the number of infections in winter weather is the fact that people tend to remain indoors in cold weather and, thus, are in very close contact with one another. Proximity allows the spread of many viruses that cause respiratory infections. In addition, influenza is even more common in winter because the virus first attacks the Far East in their summer and then spreads westward and reaches the U.S. by winter. Although it is preferable that one should stay warm, there is little hard evidence to suggest that not wearing a hat or exposure of wet hair to inclement weather increases the risk of infection or, more specifically, pneumonia. The truth is, the flu and the common cold are both caused by viruses. People get sick more often in the winter because they’re exposed to each other more.
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