Abstract
Since November 2003, the epidemic intelligence team at the French Institut de Veille Sanitaire has been gathering data on influenza A(H5N1) circulation in poultry and on human cases worldwide. As Indonesia notifies the world's 500th case to the World Health Organization, we discuss the epidemiological situation and trends of A(H5N1) influenza. Although the overall number of cases reported worldwide has decreased, influenza A(H5N1) continues to circulate intensely in some countries and more cases are to be expected, especially in Egypt and Indonesia.
Highlights
Citation style for this article: Tarantola A, Barboza P, Gauthier V, Ioos S, El Omeiri N, Gastellu-Etchegorry M, for the Epidemic Intelligence team at Institut de Veille Sanitaire (InVS)
This paper describes the epidemiological situation six and a half years into the epidemic, as Indonesian authorities notify the world’s 500th case since November 2003 [2]
The A(H5N1) influenza virus is one of several which could hypothetically give rise to a pandemic in the future [15]. This risk cannot be quantified, poultry outbreaks and human cases in contrast to the period from 2003 to 2004, occur in some of the most densely populated urban or suburban areas in the world. Might this increase the risk of the virus being transmitted to humans living in close proximity to animals, it may challenge usual control measures and make it more difficult to contain a nascent influenza A(H5N1)
Summary
The influenza A(H5N1) epidemic at six and a half years: notified human cases and more to come. Since November 2003, the epidemic intelligence team at the French Institut de Veille Sanitaire has been gathering data on influenza A(H5N1) circulation in poultry and on human cases worldwide. The international and tropical department of the Institut de Veille Sanitaire (InVS) conducts constant monitoring of health events worldwide to provide French health authorities with timely forewarning of public health events of international concern This process, known as epidemic intelligence (EI), has been described elsewhere [1]. 15 European Union countries) have notified infections by influenza A(H5N1) virus in poultry or wild birds to the World Organization for Animal Health (OIE) [3]. In 2010, cases were reported in www.eurosurveillance.org wild birds only by animal health authorities in Bulgaria, China (Tibet and Hong Kong SAR), Mongolia and the Russian Federation (Republic of Tyva). Wild aquatic fowl constitute the animal reservoir and have occasionally reintroduced influenza A(H5N1) – in European countries along the Danube or in Vietnam for example – leading to sporadic outbreaks in poultry flocks despite previous and successful elimination efforts
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