| determination of the seroprevalence of newcastle disease virus (avian paramyxovirus type 1) in zambian backyard chicken flocks. | a cross-sectional study was conducted in five provinces and 11 districts of zambia to determine the seroprevalence of newcastle disease in zambian backyard chicken flocks. of the chickens sampled, 73.9% tested positive for avian paramyxovirus type 1 antibodies by means of an enzyme-linked immunosorbent assay. seroprevalence varied amongst the five provinces sampled, ranging from 82.6% in the eastern province to 48.3% in luapula province. seroprevalence also varied amongst the 11 districts sample ... | 2012 | 23327331 |