prevalence of dirofilaria immitis infection in cats in saitama, clarify dirofilaria immitis infection among cats in saitama prefecture, japan, 1,840 cats were examined postmortem for adult worms and microfilariae in the blood from 1989 to 1995. as a reference control, 500 dogs from the same area were examined in the same way and period. d. immitis worms were found in 15 cats, one of which had microfilariae in the blood. prevalence rate of d. immitis infection was 0.8% (15/1,840) in cats and 46.8% (234/500) in dogs examined, whereas it was 4.1% and 64.6% i ...19979362033
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