Serological investigations on the avian influenza

Abstract

Serological investigations were carried out during 2006 – 2008 on 4,176 blood samples, taken from different fowl species (hen, turkey hen, goose, duck, guinea fowl and pigeon), in areas where the avian influenza was signalled. At the beginning, examination was carried out through the ELISA immunoenzyme test and then, through the hemagglutinationinhibition reaction (HIR). Of the tested 4,176 samples, 485 samples have reacted positively, which represented 11.61%, while 3691 have reacted negatively, representing 88.39%. Positive serological reactions were recorded only in the samples taken in 2006, when of 848 tested samples, 485 have reacted positively, which represented 57.11%, while 363 (42.89%) had negative reactions. Samples taken and tested in 2007 and 2008 had a negative reaction. The most positive reactions were obtained at samples taken from hen, where of 2182 tested samples, 371 (17%) had positive reactions, followed by samples taken from turkey hen (10.51%), guinea fowl (5.78%), duck (3.11%) and goose (2.74%).