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Table 2 Cat risk group definitions

From: Survey of UK pet owners quantifying internal parasite infection risk and deworming recommendation implications

Cat risk groupDescriptionEU ESCCAP recommended deworming frequency
ACat lives indoors. Infection pressure with worm stages is low, eating rodents unlikelyTreat 1–2 times per year against roundworms, or 1–2 times per year fecal exam and treatment according to findings
BCat is free to roam outdoors. Infection pressure with worm stages is high, eating rodents likelyTreat against roundworms and tapeworms at least 4 times a year
CaCat eats prey animals and/or goes outdoors to hunt and eats raw meatMore than 4 times per year
DaCat is free to roam outdoors and shares home with young children or immunocompromised individualsDeworm once a month, or examine faecal samples once a month and treat according to findings
  1. aESCCAP Cat Risk Groups include A and B only. Additional risk factors in the ESCCAP guidelines were used to create Groups C and D for consistency in reporting and comparison of dog and cat results