Tag Archives: influenza

Influenza Seasonality in the Tropics and Subtropics – When to Vaccinate?

Influenza disease affects up to 10% of the world’s population every year. The World Health Assembly resolved in 2003 to increase the use of seasonal influenza vaccines to protect individuals at high risk for…

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Dynamics of Influenza Seasonality at Sub-Regional Levels in India and Implications for Vaccination Timing

Effective influenza surveillance systems are essential to understand the epidemiology and seasonality of influenza and for optimizing influenza control strategies. Influenza occurs in distinct outbreaks of varying extent every year. This epidemiologic pattern depends upon…

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Dynamic patterns of circulating seasonal and pandemic A(H1N1)pdm09 influenza viruses

Influenza is a widespread viral infection and a major cause of morbidity and mortality worldwide [1], [2]. The WHO Global Influenza Surveillance Network has greatly contributed to the knowledge about circulating influenza viruses, including emergence of novel strains [3], [4]. Improved understanding of temporal and geographic circulation of influenza viruses and the impact of…

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Characterization In Vitro and In Vivo of a pandemic H1N1 Influenza virus from a fatal case

Influenza A viruses are endemic in many wild avian species and can produce infections in mammals with varying morbidity and mortality rates. In humans they cause annual epidemics and occasional pandemics of respiratory disease with potentially fatal outcome. Since 1997, highly pathogenic avian H5N1 viruses have sporadically produced infections in humans but although this emerging…

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Environmental predictors of seasonal influenza epidemics across temperate and tropical climates

Influenza exerts a significant health burden on human populations across temperate, subtropical and tropical regions [1]. The striking seasonal pattern that characterizes influenza in temperate populations has long suggested a causal link between seasonal fluctuations in climatic and social factors and influenza transmission [2]–[4]. Temperate regions of the northern and southern hemispheres are characterized by highly synchronized annual influenza epidemics during their respective winter months

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