title: Characterization of a Newcastle disease virus isolated from a parrot (Psittacus erythracus) in Nigeria.
abstract: The characteristics of a Newcastle disease virus isolated from a parrot (Psittacus erythracus) in Nigeria were examined using standard laboratory tests. Minimum lethal dose in embryos was 10(-10), mean death time 44.8 h. The intracerebral and intravenous pathologic indices were 1.65 and 2.42, respectively. The virus was resistant at pH 3 and pH 7.2 and the hemagglutinin was thermostable at 56 C for 120 min. Of 10 mammalian species of erythrocytes examined, those of equine and rat were not agglutinated. The isolate was typed as a velogenic viscerotropic Newcastle disease virus.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D006388:Hemagglutinins / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D009521:Newcastle Disease / Q000382:microbiology*; D009522:Newcastle disease virus / Q000276:immunology / Q000302:isolation & purification*; D009549:Nigeria; D010311:Parrots / Q000382:microbiology*; D011563:Psittaciformes / Q000382:microbiology*; D013696:Temperature
chemical_list: D006388:Hemagglutinins