Seroprevalence of Anaplasma phagocytophilum in well maintained horses from northern Tunisia.

This study aims to understand the prevalence of Anaplasma phagocytophilum, a disease affecting horses, in the northern region of Tunisia. The findings indicate that 16.3% of the horses tested were positive, with variances observed based on gender, breed, and type of horse activity.

Objective of the Research

• The research aimed to detect the prevalence of Anaplasma Phagocytophilum, a bacterial infection, in well-maintained horses from northern Tunisia. The study used an indirect immunofluorescence test to check 343 horses from 11 stables in the region.

Key Findings

• Out of the horses tested, 16.3% were found to be positive for the disease. This implies that the infection is quite widespread among the horsing community in the region.
• All the districts surveyed had horses that tested positive for the disease except for the governorate of Ben Arous. Likewise, all the tested stables except two had at least one horse that tested positive.
• The study found a wide range of prevalence rates among the stables tested, from as low as 0% to as high as 50%.

Variations in Seroprevalence

• Differences in infection rates were noticed between breed, gender, and type of activity the horse was involved in, but not the age of the horse.
• Female horses were more likely to test positive than males, with rates of 21.4% and 9.5% respectively.
• In terms of breed, English thoroughbred horses showed a significantly higher rate of positivity (30.2%) compared to the others.
• When the horses’ activities were considered, brood mares had an infection rate of 21.1%, the highest among all categories.

Implications of the Findings

• The results support the fact that Anaplasma Phagocytophilum infection is quite common in the horse population of northern Tunisia.
• The researchers recommend that veterinarians should suspect such an infection in horses showing symptoms like fever, ataxia (loss of full control over body movements), and reluctance to move.
• The study highlights the need for further investigations to address the disease and design suitable measures to prevent its spread.