Scientists finally know why people get more cold and flu in winter. [Strongmemore]
Scientists believe that the colder temperatures and drier air in winter may reduce the effectiveness of the body's immune system, making it easier for viruses to spread. Additionally, people tend to stay indoors more in the winter, which increases their chances of coming into contact with someone who is sick. Finally, the virus may be able to survive longer in cold temperatures, making it easier for it to spread.
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