So what is swine flu?
Swine flu is a respiratory disease. WHO says it is caused by influenza type A which infects swine, or pigs. The infection is undergoing constant mutation or change and there are several types of swine flu.
Swine flu has always existed, but the earlier tupes never infected humans. Until now.
How does it spread?
The flu can spread most likely through coughing or sneezing.
The symptoms are quite like that of any other flu, only more severe. These include fever, cough, sore throat, body aches, chills and fatigue.
Image: South Korean quarantine officers walk past a health sign at Incheon International Airport. | Photograph: Lee Jin-man/Pool
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