Small Animal Internal Medicine

Research Abstract

ID06 - Feline Retroviral Prevalence in Feral Cats on the San Francisco Peninsula, 2001-2003, 2005-2007, and 2014-2016

Thursday, June 14
5:15 PM - 5:30 PM
Location: WSCC 307/308

Peninsula Humane Society & SPCA’s [PHS’s] spay/neuter clinic provides discounted or free services for feral cats in San Mateo County, the suburban and rural county south of San Francisco.  Feral cats receiving free services must be tested for feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV), and if positive, they are euthanized.  Over the years, feral cat caretakers sought spay/neuter services elsewhere to avoid this requirement.  This study describes feline retroviral prevalence among feral cats presented to PHS’s spay/neuter clinic for the past 15 years.

Between 2001 and 2003, 28 of 1765 (1.6%) and 85 (4.8%) cats tested positive for FeLV and FIV, respectively.  From 2005 through 2007, 22 of 1846 (1.2%) and 107 (5.8%) cats tested positive for FeLV and FIV, respectively.  Between 2014 through 2016, 2 of 696 (0.3%) and 42 (6.0%) cats tested positive for FeLV and FIV, respectively.

Over the three 3-year periods, prevalence of FIV increased from 4.8% to 6.0% (p = 0.31) and the prevalence of FeLV decreased significantly from 1.6% to 0.3% (p < 0.03).  For each year of the study, there were significantly more FIV-positive males than females (p < 0.01).  Despite a 60% decrease in admissions in the third period, the prevalence of FIV for males remained similar across the years (p < 0.08), and increased for females, suggesting that FIV testing should continue among free-living community cats in San Mateo County.

Charlotte H. Edinboro, DVM, PhD

Senior Scientist
Exponent, Inc. Health Sciences

Charlene Edinboro is a Senior Scientist in the Health Sciences Center of Exponent, Inc., an engineering and scientific consulting firm where she is involved in multidisciplinary projects. She is an aerospace engineer with degrees from Purdue University and worked at the Jet Propulsion Laboratory and several aerospace companies, as both a control systems and a software systems engineer. Dr. Edinboro received the Outstanding Aerospace Engineer Award from Purdue University in 2009. She studied veterinary medicine at the University of California, Davis, and worked as a relief veterinarian at San Francisco Bay Area private practices and local humane societies. Dr. Edinboro returned to Purdue to study comparative epidemiology, and in her primary research, identified host, dietary, and environmental risk factors for feline hyperthyroidism. She received the 2005 Oxford Laboratories Award from the Society for Comparative Endocrinology for her research. She published the first field studies of intranasal vaccines in cats and dogs in animal shelters to reduce upper respiratory signs and an epidemiologic analysis showing the effects of shelter-neuter-return of feral cats on the health of sheltered cats. Dr. Edinboro is a member of the American Thyroid Association, serving as a member of the ATA Public Health Committee. Currently, she is a member of the AVMA’s Committee on Environmental Issues. She serves as the Section Editor for Epidemiology for JAAHA and as a reviewer for numerous other journals, is active with her local veterinary medical association, and has been an affiliate of the University of Florida’s Maddie's ® Shelter Medicine Program.

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ID06 - Feline Retroviral Prevalence in Feral Cats on the San Francisco Peninsula, 2001-2003, 2005-2007, and 2014-2016

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