Seroepidemiological survey of chlamydial infections in light horses in Japan.
To investigate the overall prevalence of chlamydial infections in light (i.e. non-draught) horses in Japan, 599 sera obtained from 12 localities in 1991 were tested for complement fixation antibodies. The mean antibody positive rates of the all sera were 15.2% (91/599) and the regional positive rates were higher in Honshu (19.1%, 48/251) and Kyushu (20.0%, 20/100) than in Hokkaido (9.3%, 23/248). In Honshu, the highest rate (56.0%, 28/50) was observed in Utsunomiya. Analysis of the positive rate in different age groups showed that the 2-5 years age-group had the highest prevalence of chlamydial infections. This indicates that chlamydial infection is prevalent in light horses in Japan.
Miyamoto
C
C
Department of Veterinary Public Health, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
Takashima
I
I
Karaiwa
H
H
Sugiura
T
T
Kamada
M
M
Hashimoto
N
N
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D002690:Chlamydia Infections / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*; D002691:Chlamydophila psittaci / Q000276:immunology*; D003168:Complement Fixation Tests; D003710:Demography; D006734:Horse Diseases / Q000453:epidemiology*; D006736:Horses; D007564:Japan / Q000453:epidemiology; D015995:Prevalence; D009956:Psittacosis / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*
D000907:Antibodies, Bacterial