People who are staying in the hospital also are at higher risk. Some examples are nursing homes or military barracks. People who live or work in facilities with many other residents are more likely to get the flu. Influenza tends to have worse outcomes in children under age 2, and adults older than age 65. Risk factorsįactors that may increase your risk of developing H1N1 or other influenza viruses or their complications include: Children and people with weakened immune systems may be able to spread the virus for a slightly longer time. People with the virus are likely able to spread the virus from about a day before symptoms appear until about four days after they start. You can't catch swine flu from eating pork. It also can enter your body if you touch a contaminated surface and then touch your eyes, nose or mouth. The virus enters your body when you breathe in contaminated droplets. The virus spreads through the air in droplets released when someone with the virus coughs, sneezes, breathes or talks. Influenza viruses such as H1N1 infect the cells that line your nose, throat and lungs.
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