West Valley Mosquito District warns of rising flea‑borne typhus; Chino advocates urge broader approach to feral cat management

Dr. Michelle Brown, district manager for the West Valley Mosquito and Vector Control District, told the Chino City Council Sept. 2 that flea‑borne typhus is increasing across Southern California and advised residents on prevention steps including regular flea treatment for pets and discouraging wild or stray animals from visiting yards. Dr. Brown said San Bernardino County saw a threefold increase in human flea‑borne typhus cases in 2024 compared with prior counts and noted that Los Angeles and Orange counties had already issued public alerts for affected cities.

Dr. Brown said the district adopted guidance for managing feral cat communities that mirrors Orange County’s approach and the ASPCA’s humane‑care recommendations. She acknowledged the district is not veterinary authority for specific treatments and said the district is collaborating with the ARC to develop resource guidelines for community groups that sponsor feral cats.

Local advocates said a narrow focus on feral cats risks missing other flea sources and can produce public alarm. Terry Carver of Feral Cat Friends of Chino told the council her organization has trapped and vetted more than 700 cats in Chino and said: “There are more ways to be infected than feral cats.” Carver raised rodents, possums, raccoons and other mammals as alternative flea sources and warned against what she called a “vacuum effect” if feral cats are removed without addressing other vector hosts.

Animal‑welfare advocates also pressed the ARC for greater transparency and public participation. Maureen Mendoza said the ARC held a special board meeting on July 21 that included agenda items on trap‑neuter‑release (TNR) strategy and an ARC animal‑welfare plan but that the public had little notice and advocates were excluded from meaningful comment. Mendoza said the agenda language on budget and physical impacts did not reflect future unfunded costs and asked the city, which the record shows holds a 20% voting share in the ARC, to press for more openness and for special meetings to be reserved for true emergencies.

Why this matters: flea‑borne typhus can cause fever, muscle aches, nausea and rash in people and is transmitted by flea bites. Municipal guidelines and TNR practices intersect with public‑health objectives because community feral‑cat programs are managed locally by advocates, shelters and municipalities. The West Valley district urged a holistic approach that includes treatment for pets, community education, humane TNR practices and coordination with regional animal‑care groups.

Provenance: presentation by West Valley Mosquito and Vector Control District (Dr. Michelle Brown) and public comments on feral cats and ARC transparency from Terry Carver and Maureen Mendoza appear in the public information and public comment sections of the Sept. 2 meeting.

Ending: Council members thanked speakers and staff and did not take formal action at the meeting; staff said the information item and external agency report are included in the meeting packet for further review and that district and shelter coordination will continue.