Seroprevalence of Toxoplasma gondii infection among veterinary staff in Ontario, Canada (2002): implications for teratogenic risk.
BACKGROUND
Toxoplasma gondii infection is embryotoxic in humans. It is mainly transmitted through raw/undercooked meat and ingestion of oocysts in cat feces. There remains controversy about the actual risk of cats transmitting the disease to humans. Our primary objective was to determine the seroprevalence of T. gondii antibody among veterinary staff, to ascertain whether they have an increased risk through occupational exposure. Our secondary objective was to examine their practices regarding cats, toxoplasma infection, and pregnancy.


METHODS
Veterinary staff attending the 2002 Annual Ontario Veterinary Medical Association Conference were invited to discuss their toxoplasma seroprevalence. Interested attendees completed a questionnaire and a physician drew blood samples to determine T. gondii titres using the ELISA IgG test.


RESULTS
We collected 161 completed questionnaires, and 141 blood samples. There were 20 (14.2%, CI 95%:8.4-19.9%) reactive titres among the veterinarian staff (80% females aged 30-45). All were regularly exposed to cats, washed their hands when in contact and few wore gloves routinely.


CONCLUSIONS
These findings of low positive rates may be used to reassure veterinary staff that their exposure to cats does not appear to increase their risk of contracting toxoplasma infection and that pregnant women are not at an increased risk by owning a cat.
Shuhaiber
Samar
S
The Motherisk Program, Division of Clinical Pharmacology/ Toxicology, The Hospital for Sick Children, University of Toronto, Ontario, Canada. sshuhaiber@apotek.com
Koren
Gideon
G
Boskovic
Rada
R
Einarson
Thomas R
TR
Soldin
Offie Porat
OP
Einarson
Adrienne
A
D000818:Animals; D005260:Female; D006801:Humans; D009784:Occupational Diseases / Q000453:epidemiology* / Q000276:immunology / Q000469:parasitology; D009864:Ontario / Q000453:epidemiology; D011247:Pregnancy; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D014123:Toxoplasmosis / Q000453:epidemiology* / Q000276:immunology; D018634:Veterinarians