Introduction H1N1 , also known as swine flu, is a type of influenza A virus that was identified in humans in 2009. It emerged as a result of a mix of genes from flu viruses found in North American swine, North American birds, humans, and Eurasian swine 1. H1N1 causes respiratory illness by infecting the nose, throat, and sometimes the lungs. Its symptoms are similar to those of seasonal flu, which includes, fever, cough, sore throat, and body aches. In India, signidicant H1N1 outbreaks were ... 1) What is swine flu ( A H1N1 )? Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza viruses that causes regular outbreaks in pigs. People do not normally get swine flu, but human infections can and do happen. Swine flu viruses have been reported to spread from person-to-person, but in the past, this transmission was limited and not sustained beyond three people. 2) Is this swine flu contagious? Yes. This swine influenza A ( H1N1 ) virus is contagious and is ... Swine flu ( H1N1 ) is a type of flu virus that can cause respiratory infection in humans. Learn how it spreads, how to prevent it and how to treat it from Cleveland Clinic experts.
