User:GerardM/test/el

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Το Swine influenza (ή αλλιώς swine flu, hog flu, και pig flu) αναφέρεται στο influenza που προέρχεται από those strains of influenza virus, called swine influenza virus (SIV), that usually infect pigs.<ref name=Merck/> Swine influenza is common in pigs in the midwestern United States (and occasionally in other states), Mexico, Canada, South America, Europe (including the United Kingdom, Sweden, and Italy), Kenya, Mainland China, Taiwan, Japan and other parts of eastern Asia.<ref name=Merck>Template:Cite journal</ref>

Η μεταλλαγή του ιού swine influenza από τα γουρούνια στους ανθρώπους is not common and properly cooked pork poses no risk of infection. When transmitted, the virus does not always cause human influenza and often the only sign of infection is the presence of antibodies in the blood, detectable only by laboratory tests. When transmission results in influenza in a human, it is called zoonotic swine flu. People who work with pigs, especially people with intense exposures, are at risk of catching swine flu. However, only about fifty such transmissions have been recorded since the mid-20th century, when identification of influenza subtypes became possible. Rarely, these strains of swine flu can pass from human to human. In humans, the symptoms of swine flu are similar to those of influenza and of influenza-like illness in general, namely chills, fever, sore throat, muscle pains, severe headache, coughing, weakness and general discomfort.