Symptomatic infections less frequent with H1N1pdm than with seasonal strains | Zendy

Antoine Flahault | Zendy; Xavier de Lamballerie | Zendy; Thomas Hanslik | Zendy; Nicolas Salez | Zendy

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Symptomatic infections less frequent with H1N1pdm than with seasonal strains

Author(s) -

Antoine Flahault,

Xavier de Lamballerie,

Thomas Hanslik,

Nicolas Salez

Publication year - 2009

Publication title -

plos currents

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 49

ISSN - 2157-3999

DOI - 10.1371/currents.rrn1140

Subject(s) - medicine , seroprevalence , demography , mainland , seasonal influenza , population , quarter (canadian coin) , mainland china , environmental health , covid-19 , disease , geography , immunology , serology , archaeology , sociology , infectious disease (medical specialty) , antibody , china

A serosurvey conducted in a sample of first quarter pregnant women in France at week 48-49 of 2009 exhibit a seroprevalence level of 10.6%. It has been extrapolated in male and female population living in France mainland, aged 20-39 yr, that 1,712,000, 95%CI (1,112,700 – 2,311,300) people were recently infected by H1N1pdm (recently vaccinated women were excluded from analysis). From week 36 to 46-47 of 2009, 336,288, 95%CI (207,303-421,299) patients visited their general practitioners with clinical influenza in France, mainland. We then extrapolated the proportion of symptomatic H1N1pdm influenza in both males and females aged 20-39 yr who visited their GP to be 19.6%.

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