Category Archives: Aviar viruses
It already seem distant history the outbreaks of H5N8 highly pathogenic, for birds not for people, avian influenza, which took place a few months ago in Catalonia, which had an index case featuring a stork found dead in early February in the Aigüamolls de l’Empordà. The outbreak is over and nowadays, the farms, after the entry of sentinels that have given negative results are again under exploitation.
For over 10 years IRTA-CReSA has been conducting diagnosis and technical assistance within the surveillance program of avian influenza in wild birds in Catalonia as commissioned by the DARP. This program was initiated with the aim of an early detection of circulation of highly pathogenic avian influenza H5N1 virus that affected wild birds and poultry. The virus had been circulating Asia and was finally detected in Europe in 2006.
In the last post, a few days ago, we commented that H5N8 avian flu had reached the other side of the Pyrenees and that soon it would jump towards the Peninsula. A few days ago the detection of H5N8 strain was reported in two common geese (Anser anser) found dead in the lagoon of La Nava de Fuentes, in Palencia (Castilla y León). This detection was possible thanks to what we call passive epidemiological surveillance.
A few months ago, in September 2016, the United Nations agency for food and agriculture (FAO) warned of the spread of a highly pathogenic avian influenza virus, HPAI H5N8 on Lake Ubsu-Nur, in Russia. A few weeks later the virus had reached India and Europe. This would be the fourth wave of intercontinental propagation of an HPAI virus since 2005; The last one was 2014/2015. It is assumed that the main “guilt” would lie in the movements of migratory birds.
In recent months a new outbreak of a new avian influenza virus (H7N9 strain) in China, has reached humans, despite being listed as a low pathogenic virus in birds. At the time of writing this blog post will feature more than 140 infected persons, with a total of 45 dead.