DGAV has been asking all bird keepers to comply with biosecurity measures and good production practices, avoiding contact between domestic and wild birds.
The focus was detected, this Monday, in a wild bird, in the parish of Sé, according to data released by DGAV.
This is the 28th outbreak of bird flu virus infection confirmed this year.
Bird flu had recently been detected in Benavente, Cascais and Aveiro.
Transmission of the virus to humans occurs rarely, with sporadic cases having been reported around the world. However, when it occurs, the infection can lead to a serious clinical condition.
DGAV has been asking all bird keepers to comply with biosecurity measures and good production practices, avoiding contact between domestic and wild birds.
Any suspicion of bird flu infection must be reported to DGAV.
DGAV is a central service of direct State administration, with administrative autonomy.