Swine flu, also known as the H1N1 influenza virus, is a respiratory illness caused by the influenza A virus. It spreads in a similar way to seasonal flu, mainly through coughing, sneezing, or touching contaminated surfaces. Symptoms of swine flu can include fever, cough, sore throat, body aches, headache, fatigue, and sometimes vomiting and diarrhea. Most cases of swine flu are mild and resolve on their own without treatment. However, in some cases, particularly in people with underlying health conditions or weakened immune systems, it can lead to severe illness or complications like pneumonia. Vaccination is the best way to prevent swine flu, and it is often included in the seasonal flu vaccine.

“swine flu”的英语定义和含义

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