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Influenza A(H5N1) detection in two asymptomatic poultry farm workers in Spain, September to October 2022: suspected environmental contamination.

ABSTRACT: In autumn 2022, the Spanish Influenza National Reference Laboratory (NRL) confirmed the detection of influenza A(H5N1) in samples from two asymptomatic workers linked to an outbreak in a poultry farm in Spain. Nasopharyngeal swabs were taken according to a national screening protocol for exposed workers. Absence of symptoms, low viral load and negative serology in both workers suggested environmental contamination. These findings motivated an update of the early detection strategy specifying timing and sampling conditions in asymptomatic exposed persons.

SUBMITTER: Aznar E 

PROVIDER: S-EPMC9951258 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Influenza A(H5N1) detection in two asymptomatic poultry farm workers in Spain, September to October 2022: suspected environmental contamination.

Aznar Esteban E   Casas Inmaculada I   González Praetorius Alejandro A   Ruano Ramos María José MJ   Pozo Francisco F   Sierra Moros María José MJ   García Rivera María Victoria MV   Sánchez Sánchez Azucena A   García Villacieros Elena E   Saravia Gabriela G   Iglesias-Caballero María M   Román Marcos Elena E   García San Miguel Lucía L  

Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin 20230201 8

In autumn 2022, the Spanish Influenza National Reference Laboratory (NRL) confirmed the detection of influenza A(H5N1) in samples from two asymptomatic workers linked to an outbreak in a poultry farm in Spain. Nasopharyngeal swabs were taken according to a national screening protocol for exposed workers. Absence of symptoms, low viral load and negative serology in both workers suggested environmental contamination. These findings motivated an update of the early detection strategy specifying tim  ...[more]

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