Study adds context to flea- and tick-related disease risk in cats

A new study in Veterinary Sciences adds nuance to how veterinarians think about flea- and tick-related disease risk in cats by focusing on Cytauxzoon felis, one of the most serious tick-borne pathogens in U.S. feline medicine. The paper compared qPCR and ELISA approaches for detecting exposure or infection in domestic cats from the south-central U.S., where cytauxzoonosis remains a high-concern disease. That matters because C. felis can be rapidly fatal in clinically affected cats, but some cats survive and may remain chronically infected, making simple “sick or not sick” assumptions less reliable. Broader client education sources from PetMD and Fear Free also reinforce that cats, including indoor cats, still face meaningful flea- and tick-related disease risk, and that there’s no vaccine protection for these infections. (capcvet.org)

Why it matters: For veterinary teams, the practical takeaway is that prevention and diagnostics both need a wider lens. CAPC says cytauxzoonosis should be on the differential list for cats with fever, lethargy, icterus, respiratory signs, lymphadenopathy, or anemia, and notes mortality is often high despite treatment; the current recommended protocol includes aggressive supportive care plus atovaquone and azithromycin. At the same time, AAHA/AAFP guidance emphasizes routine parasite prevention for most pet cats, with increasing concern as tick populations expand geographically. Flea control matters, too: CAPC and CDC note cat fleas can transmit zoonotic agents including Bartonella henselae and Rickettsia felis, underscoring the need for year-round conversations with pet parents, not just seasonal reminders. (capcvet.org)

What to watch: Expect more attention on earlier, more practical feline vector-borne diagnostics, especially as researchers continue work on ELISA-based assays and as endemic tick ranges keep shifting. (mdpi.com)