The Question Concerning the Inactivation of Viruses in the Air
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
Stability of a number of viruses was studied under experimental conditions. Adenoviruses, enteroviruses and virus of Newcastle disease proved to be the most stable under conditions of room temperature and relative humidity under such conditions parainfluenza and respiratory syncitial viruses were inactivated much more rapidly. A significant effect on the extent of viral inactivation in aerosol condition was produced by relative air humidity. At low relative air humidity adenoviruses and enteroviruses were inactivated in the course of one to two hours, whereas at high and moderate humidity it was possible to detect them in the chamber for 7 to 24 hours. Parainfluenza, respiratory-syncitial and Newcastle disease viruses were rapidly inactivated at high and medium relative air humidity, and--to a lesser extent--at low humidity. The character of inactivation of various viruses in droplet aerosol phase under the effect of relative humidity was apparently associated with the structure of viral particles.