From the category archives:

H1N1 Infection Statistics

How many people have already had H1N1 pandemic flu?

The extent of the H1N1 pandemic has been estimated from case counts and deaths but the proportion of exposed populations with inapparent infections has not been described in detail. We analysed haemagglutination-inhibition (HI) antibody titres of pre-vaccination sera from pandemic vaccine trials conducted in six countries on four continents to provide an indication of A/CA/07/2009(H1N1)-like [...]

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Influenza Activity — United States, 2009–10 Season

During the 2009–10 influenza season, the second wave of influenza activity from 2009 pandemic influenza A (H1N1) occurred in the United States; few seasonal influenza viruses were detected. Influenza activity(*) peaked in late-October and was associated with higher pediatric mortality and higher rates of hospitalizations in children and young adults than in previous seasons. The [...]

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Bangladesh detects 298 A/H1N1 flu cases in January-June period

Bangladesh Sunday announced that in the first half of this year the country has detected 298 cases of A/H1N1 flu. The latest statistics of the country’s Institute of Epidemiology,Disease Control and Research under the Health Ministry released here on Sunday showed 298 cases of A/H1N1 flu were confirmed during January-June period of this year, raising [...]

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Deaths and Hospitalizations Related to 2009 Pandemic Influenza A (H1N1) In Greece

During May 18, 2009–February 28, 2010, a total of 18,075 laboratory-confirmed 2009 H1N1 cases were reported. Laboratory-confirmed illness rates per 100,000 population varied among the 13 administrative peripheries of Greece (Figure 1). Two waves of 2009 H1N1 transmission were observed. A moderate wave occurred during July–August and was followed by a decrease in cases through [...]

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Perú: 19 H1N1 deaths so far this year

[Peru: Number of H1N1 deaths rises to 19] The Ministry of Health reports that the number H1N1 deaths in the country this year has risen to 19, after 17 deaths from the disease were reported yesterday. More via H5N1: Perú: 19 H1N1 deaths so far this year.

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Swine Flu fatalities in India 5% of positive test cases

In India, at least 139,466 people have been tested for symptoms of so-called swine flu, with 23% testing positive for H1N1, according to clinical study data compiled by Zydus in its research on H1N1 vaccine. The fatality rate in swine flu infections is about 5%. via Cadila Healthcare seeks to expand vaccine business – Corporate [...]

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How flu spreads around the world: Singapore study

The fi rst 350 novel influenza A (H1N1-2009) cases comprised 221(63%) imported cases, 124 (35%) locally acquired cases and 5 (2%) cases with unknown source. The imported cases consisted of three waves involving the United States (US), Australia and Southeast Asia. In the fi rst wave, 11 (69%) of the 16 imported cases had visited [...]

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UK young adults with flu 37 times higher in 2009

Hospitalisation rates for young adults with influenza were 37 times higher in the autumn of 2009—when the H1N1 strain was predominant—than for the same period in the previous year, the latest figures for hospitals in England show. Speaking at a briefing to reflect on the lessons learnt from the H1N1 outbreak, one year after it [...]

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44,000 extra deaths in USA flu related?

Under a less conservative estimate, based on comparing overall mortality during the pandemic with mortality over the same period in previous years, excess deaths numbered 44,100, surpassing those of a typical flu season. Years of life lost were three to four times higher than a virulent H3N2 season and five times higher than years of [...]

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Spread Of Flu Could Be Predicted By Visualization Of Geographic Patterns

Disease statistics buried within patient records or detailed in newspaper clippings can be sorted and organized to depict geographic patterns, allowing the discovery of trends that were previously overlooked, according to a Penn State geographer. “The use of interactive maps and graphs, combined with word search interfaces, can lead to greater insight into complex events [...]

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