The aim of this study was polar fox estimation of state of health on 10 farms located in Koszalin area. State of animal health was estimated based on clinical investigations. Samples for bacteriological investigations were collected in January and February before reproduction season. There were smears of vagina from females and smears from the male foreskin sac. For the titer evaluation of antibodies, from September till October blood was collected from the female under-arm foremost vein – v. cephalica antebrachi. The titer of antibodies against parvovirus was done using inhibition hemagglutination test at the National Veterinary Institute in Puławy. Dung for parasitological investigations was collected in July and in December at the time of slaughtering for pelts. The investigations were done using flotation sedimentation method. Presence of Staphylococcus aureus, Pseudomonas aeroginosa), Streptococcus sp., E. coli) chlamydia, fungi Cryptococcaceae as weel as parasites: Toxocara canis, Toxocara leonina, Uncinaria stenocephala, Taenia sp., Echinococcus perfoliatus. Serological investigations showed, that in 38% samples presence of antibodies against parvovirus, while the titer of antibodies ranged from 20 to <1280.

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