Heat Stability of Hemagglutinin of Various Strains of Newcastle Disease Virus.

Abstract

ConclusionThe stability of the hemagglutinin of different Newcastle disease virus strains, when subjected to increased temperatures, has been found to vary over a wide range. The stability of the hemagglutinin of 1 isolate was destroyed at 56°C in a period as short as 5 minutes, and that of another was diminished only after 6 hours exposure. The stability of the hemagglutinin of Newcastle virus is discussed in relation ship to influenza viruses. A relation of heat stability of strains to place and time of isolation is observed.