Among the closest relatives of Thelazia species of importance in veterinary medicine is Spirocerca lupi, the oesophageal parasite of dogs and other carnivores. Spirocerca lupi does not occur in Canada other than in dogs imported from endemic areas.
Host range and geographic distribution
Life cycle - indirect
Pathology and clinical signs
Treatment and control
Detailed information on these products is available from the Compendium of Veterinary Products (CVP) (Twelfth Edition, 2011), or from the manufacturers.
Control of Thelazia species in cattle is difficult, other than by attempting to control the horn fly intermediate hosts and maintaining good general health.