why Bird flu? It is an infectious disease that mainly affects birds. caused by the influenza A virus, low pathogenicity in most cases. The level of risk to animal and public health may be high due to the rapid mutating of these viruses into highly pathogenic forms.
A/H5N1 influenza virus was first detected in Hong Kong in 1997, caused several epidemics in Southeast Asia in 2005, and has since spread geographically to Western Asia, Europe and Africa, affecting a wide geography today. . area that currently covers 56 countries.
Confronted with these epidemics, Adecana has become increasingly popular with citizens in general and hunters in particular. we must not let our guard down and cooperate with the relevant Animal Health and Public Health sectors to accurately identify areas of disease activity in animals and to intensify animal surveillance.
it has been shown that wild birds They are often asymptomatic carriers of the virus, especially migratory waterfowl, so they are considered the main reservoir in nature, and low pathogenic viruses from these birds can infect domestic birds and some may mutate to become highly pathogenic viruses. can cause epidemics.
Spain has been conducting surveillance programs for avian influenza in domestic birds since 2003 and has since been expanded to include wild birds since 2004, and its priority is to ensure the absence or presence of H5 and H7 subspecies of the virus. For this purpose, two programs, passive surveillance and active surveillance, were established to try to better understand the epidemiology of the virus and to create uninterrupted wild bird sampling throughout the year by intensifying it during the breeding seasons. and wintering.
Outbreaks detected in Spain
According to ministry sources, 122 cases of wild birds were detected in 13 autonomous communities in 2022 (57 from Atlantic Gannet, Gray Goose, White Stork and Mallard Duck); 136 outbreaks in domestic birds (Huelva, Badajoz and Guadalajara) and 3 outbreaks in captive birds (Toledo), an endemic pattern never seen before.
It should be noted that since 1 July 2022, 73 cases have been detected in wild birds, mostly in gannets off the Atlantic and Cantabrian coasts.
We contacted the people in charge of Animal Health of the Government of Navarra from Adecana and conveyed to us their work in the treatment and prevention of this problem, in coordination with the Ministry of Fisheries and Food.
We have been informed that it has been determined regarding the 2021-2022 season. a series of spotlights, The unusually high elevation of H5N1 in both wild and domestic birds in Europe is certainly associated with continued summer high temperatures in both wild and domesticated birds.
Contrary to previous years, it was determined that the virus continued to circulate when the incidence decreased in the summer months, the usual bird surveillance systems in the field were established for them, and the analyzes of the birds taken were highlighted. A negative result was obtained from the inspection of a seagull found dead from the Ilundain Wildlife Rescue Center of the Government of Navarra and from the Zolina raft. As for the positive results for the virus, it was found in some bearded vulture chicks, storks and some vultures nesting near muga between Gipuzkoa and Navarra.
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