Have you ever had the flu?. In this post I will explain briefly about what the flu and a video showing how flu infect. Flu is an infection of the upper respiratory tract, affecting the vessels of the nose and throat caused by a virus. There are more than 200 cold viruses. The type of virus may be different in each season. Antibiotics will not get rid of viruses. Infections will go away by itself, unless a secondary infection. Antibiotics may be needed only when there is a secondary infection. Flu can spread easily when someone is talking, coughing or sneezing or by direct contact. Children with low disease resistance than adults to get the flu more often, say 6-12 times a year, while adults get the flu 2 times in a year.
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