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Swine influenza is an infection by any one of several types of swine influenza viruses. Swine influenza is of influenza type A, and there are four known virus subtypes - H1N1, H1N2, H2N1, H3N1, H3N2. It can be transmitted to humans, but until recently, this had only happened for people with regular exposure to pigs. In April 2009, however, something new happened as, for the first time, a swine influenza virus was transmitted directly from humans to humans. A pandemic was declared by WHO on 11 June 2009.
Answer time 0s (0s). 75% have previously answered correct on this question. The question was created 2009-04-30.
Historically, it has been used as an icon in various religious and occult contexts. How many edges are there in a pentagram?
The use of this metal and chemical element can be traced back to 3,500 BC. Which chemical element is number 28 in the Periodic Table?
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Which of the following countries was not one of the original members of the European Coal and Steel Community, the predecessor to the EU?
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How many per cent of all men are left-handed?