Antibodies to Type A Influenza Virus in Wild Waterbirds from Argentina

BROWN, JUSTIN D.; LUTTRELL, M. PAGE; UHART, MARCELA; FERREYRA, HEBE DEL VALLE; ROMANO, MARCELO; RAGO, VIRGINIA; STALLKNECHT, DAVID E.

JOURNAL OF WILDLIFE DISEASES

WILDLIFE DISEASE ASSOC, INC

Lugar: Journal of Wildlife Diseases; Año: 2010 vol. 46 p. 1040 - 1045

0090-3558

Limited information exists on avian influenza (AI) virus infection in South American wild birds. As part of a national surveillance program in Argentina, indigenous waterbirds were screened for antibodies to AI virus. From November 2006 to July 2007, serum samples from 540 waterbirds of 12 species were tested for type-specific antibodies to AI virus with the use of a commercially available blocking enzyme-linked immunosorbent assay (bELISA) and the agar-gel immunodiffusion (AGID) test. Thirty-three percent (176/540) of serum samples were positive with the bELISA and 12% (64/540) were positive with the AGID test. The bELISA detected antibodies to AI virus in eightof the 12 species, and the AGID detected positives in only five species. These results provide insight into AI virus circulation inArgentinean waterbirds and preliminary data to guide further surveillance efforts.