抄録
I have studied the interference phenomena between Influenza virus and several viruses including Japanese B Encephalitis in chick embryo system. When several strains of Influenza virus were inoculated into the chorio-allantoic cavity of an embryonated egg, inoculated 72 hours previously with Japanese B Encephalitis virus, the Influenza virus was unable to propagate. The excluding ability of Japanese B Encephalitis virus against Influenza virus depends upon its virulence; also the interference phenomena of Japanese B Encephalitis is stronger when inoculated into the yolk sac than when into the chorioallantoic cavity.
From the above experiments, with Influenza virus as the indicator the degree of propagation of the Japanese B Encephalitis virus in hatching chick embryo can be detected.
