lørdag 27. juni 2020

The 2009 pandemic H1N1 virus first emerged in Mexico and California in April and quickly spread globally. On June 11, 2009, a pandemic was declared by the World Health Organization [8]. The virus was antigenically unrelated to previously circulating seasonal H1N1 viruses, and molecular studies revealed that it had gene segments from several viruses that were circulating in pigs: the North American H3N2 triple-reassortant and the Eurasian ‘avian-like’ swine H1N1 viruses αφορισμός You’ve got 18.6 million followers on Instagram, over three million on Twitter.

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