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Rapid Diagnosis of Avian Influenza Virus in Wild Birds: Use of a Portable rRT-PCR and Freeze-dried Reagents in the Field
Published on: August 2, 2011
An epizootic of highly pathogenic avian influenza virus H7N3 in a Mexican ecological reserve
Roberto Navarro-López1, Héctor Enrique Valdez-Gómez2, Mitzunari Zalapa-Hernández1
1Comisión México-Estados Unidos para la Prevención de la Fiebre Aftosa y Otras Enfermedades Exóticas de los Animales, Carretera México-Toluca km 15.5. Col. Cooperativa Palo Alto, 05110, Mexico City, ZC, Mexico.
Abstract:
In this case study, we describe an outbreak of highly pathogenic avian influenza (HPAI) virus subtype H7N3 in an ecological reserve in Chiapas, Mexico, affecting captive and wild birds. The virus was detected mainly in plain chachalacas displaying respiratory and gastrointestinal clinical signs and death within 24 hours. Mortality in white-fronted parrots and a clay-colored thrush was also recorded. We describe control strategies implemented to prevent virus dissemination and active surveillance within the risk area. Phylogenetic analysis revealed that the HPAI H7N3 virus detected in affected birds shared a close genetic relationship with Mexican H7N3 isolates from 2012.
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