Swine flu is a type of respiratory disease that was discovered in a pig in 1930. It is a type of disease that causes outbreaks of influenza in pigs. There are four main types of influenza viruses isolated in pigs: H1N1, H1N2, H3N2 and H3N1. However, the virus the most recent isolated virus found in pigs is H1N1. Swine flu normally doesn’t infect humans, however, the recent swine flu outbreak which was observed in Mexico 2009, has been spreading from person to person and spreading to different countries and borders. Symptoms of swine flu are similar to those of the seasonal flu and they include cough, fever, sore throat, runny nose, headache, fatigue, vomiting and nausea. If not detected early, swine flu can prove to be life-threatening.
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