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Microbiol Immunol. 2003;47(2):147-53.

Seroprevalence of Bartonella henselae, Toxoplasma gondii, FIV and FeLV infections in domestic cats in Japan.

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Laboratory of Veterinary Public Health, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa 252-8510 Japan.


Seroprevalence of Bartonella henselae, Toxoplasma gondii, feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) infections was investigated in 1,447 domestic cats derived from the north (Hokkaido) to the south (Okinawa) prefectures in Japan. Of the cats investigated, 8.8% (128/1,447) were seropositive to B. henselae, 5.4% (78/1,447) to T. gondii, 9.8% (107/1,088) to FIV, and 2.9% (32/1,088) to FeLV, respectively. For B. henselae infection, the positive rate varied from 11.5% in cats of 1 to <2 years old to 7.2% in those over 3 years old. Outdoor cats showed higher positive rate (14.5%) than that (7.0%) in indoor ones. The rate (13.5%) in flea-infested cats was significantly higher than that (7.4%) in flea-negative cats. The positive rates in southern and urban sites were more likely to be higher than those in northern and suburban sites, suggesting that warm and humid environments, density of cat population, and raising status, including hygienic condition and flea infestation in cats may correlate to higher seroprevalence of B. henselae infection. For T. gondii, FIV and FeLV infections, the seroprevalence also tended to be higher in outdoor, flea-infested cats and advanced age groups. For FIV infection, the positive rates in male (14.3%) and outdoor cats (15.0%) were significantly higher than those in female (5.0%) and indoor cats (4.6%). On the other hand, no significant difference in seropositivities was observed in FeLV and T. gondii infections concerning to both genders and raising status.

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