Subtype of the influenza A virus, with some strains that are swine flue, others avian flue.
1 Health officials say the H1N1 virus is not linked to meat products.
2 Vietnam requires any suspected H1N1 cases to be isolated for seven days.
3 The World Health Organisation declared an H1N1 influenza epidemic on June 11.
4 NETHERLANDS - The Netherlands started vaccinating children against the H1N1 on Monday.
5 The number of cases of H1N1 flu in Japan has topped 300.
6 The World Health Organisation declared an H1N1 influenza pandemic on June 11.
7 Six deaths are being investigated for possible links to the H1N1 virus.
8 Last week, the WHO described H1N1 as the fastest-moving pandemic ever seen.
9 There have been no reports of deaths from H1N1 flu in China.
10 However, H1N1 viruses disproportionately affected middle-aged adults during the 2013-2014 influenza season.
11 However, no increase in heterosubtypic cross-neutralization of Group1-H1N1 seasonal strains was observed.
12 During the study period, 157 patients presented with subsequently proven H1N1 infection.
13 She said H1N1 pandemic flu was now widespread across the United States.
14 Initial tests at the city's tropical diseases hospital were positive for H1N1.
15 When news broke of the new H1N1 strain, they ran more tests.
16 Last year's top words were Twitter, Obama and the flu virus H1N1.
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