° As a result of the strengthened epidemiological surveillance of avian influenza implemented by the National Agri-Food Health and Safety Services (SENASA), a report was received regarding an unusual increase in mortality among backyard birds in a community, associated with contact with wild birds.
° In response, national protocols for addressing suspected cases of high pathogenicity avian influenza (HPAI) were immediately activated, including the conduct of an epidemiological investigation, sample collection, and the implementation of containment measures established in the National Contingency Plan.
° Analyses conducted by the official laboratory confirmed the presence of the high pathogenicity avian influenza virus, prompting the implementation of the corresponding sanitary measures.
° These included the culling of affected birds and susceptible birds (stamping out) on adjacent properties within the risk zone; the safe disposal of products and materials considered to pose a risk; as well as the cleaning and disinfection of the facilities and all potentially contaminated items, with the aim of reducing the risk of the virus spreading.
° Additionally, SENASA has established an outbreak zone, a perifocal zone, and a surveillance zone around the confirmed outbreak, where intensified epidemiological surveillance, sampling of susceptible birds, epidemiological investigations, restriction of bird movement, and risk communication efforts targeting producers and the general public are being carried out; furthermore, the Ministry of Health has been notified to ensure a joint response to the event.
° These activities aim to promptly detect any associated events and verify the effectiveness of the control measures implemented.
° SENASA will continue epidemiological monitoring of the event until the activities established in the National Contingency Plan are completed and the absence of viral circulation in the affected area is demonstrated.
° It will also keep producers, authorities, and the general public informed through periodic updates to the relevant reports.
° The affected population consisted of backyard birds, comprising susceptible domestic species raised in family-based production systems.
° These birds were of various age groups and were in frequent contact with the outdoor environment, a condition that facilitates interaction with wild birds and increases the risk of exposure to the high pathogenicity avian influenza virus.
Source:
Link: https://wahis.woah.org/#/in-review/7710
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