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According to the CDC, swine flu or swine influenza, is a respiratory disease in pigs caused by type A influenza virus belonging to the Orthomyxoviridae family. Apart from type A swine flu, there is also the type C swine flu virus, though this strain is rare. The subtypes of the influenza A virus that cause swine flu are H1N1, H1N2, H3N1, H3N2, and also H2N3. The three most commonly seen strains are H1N1, H1N2, and H3N2. A swine flu outbreak of the kind we have witnessed recently is not common among humans, though it is quite common among pigs. Among people, swine flu occurs as a result of contact with pigs, usually at pig farms.
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| Casualities(India): 165 | Pandemic Level: 6 |
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by Kangna Agarwal - November 18, 2009  New Delhi, November 18 -- Since its outbreak in June this year, the H1N1 influenza has taken a widespread toll. With four more H1N1 deaths in India, the toll goes up to 530, as per an official statement.
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