[Serological examinations on natural infections with mouse pathogens in inbred mouse strains: difference in antibody detection among the strains (author's transl)].

Serological surveys on several infections were performed on the inbred mouse strains maintained at the Central Institute for Experimental Animals. In the first survey, 11 strains of mouse, which were 8 weeks of age or older and were kept in separate cages in the same animal room, were tested for antibodies to Salmonella enteritidis, Corynebacterium kutscheri, Tyzzer's organisms, Mycoplasma pulmonis, mouse hepatitis virus (MHV), Sendai virus (HVJ), pneumonia virus of mice (PVM) and minute virus of mice (MVM). Positive results were obtained in MHV, HVJ, PVM and MVM. Positive rates for these viruses except for MVM were different among mouse strains. In the second survey, 5 strains of mouse kept together in the same cage for 4 weeks after weaning were examined for MHV and HVJ antibodies. Positive rates to MHV were different among mouse strains as observed in the first survey. For HVJ antibody, no difference was demonstrated in positive rates unlike in the first survey, but the titers varied between the strains. These results suggest the difference in antibody response to natural infections dependent on mouse strains.