Host specificity and pathogenicity of pox viruses from wild birds.

Abstract

An attempt was made to differentiate avian pox viruses by means of transmission experiments and cross-immunity tests, and to compare the results with those of other workers. It is concluded that a further clarification of the differences in susceptibility of bird hosts and in virulence of virus strains can only be achieved when the immune status of the experimental birds can be determined by reliable tests.