Fasciola hepatica infection in horses in three governorates in northern Egypt: prevalence and risk factors.

This study examines the prevalence and risk factors of the parasitic infection, Fasciola hepatica, in horses from three different regions in northern Egypt. Using blood testing, the researchers found that 13% of the horse population is infected, with certain breeds, ages, and living conditions appearing to increase the likelihood of infection. Knowledge gained from this study can contribute to strategies on how to manage and reduce the disease.

Study Aim and Methodology

• The research aimed to ascertain the prevalence, or frequency, of Fasciola hepatica, a parasite that affects many mammals, including horses, in Egypt. As there were no prior epidemiological data on this parasite’s impact on the horse population in Egypt, the researchers sought to bridge this gap in knowledge.
• To determine the extent of the infection, the researchers used ELISA (Enzyme-Linked Immunosorbent Assay). This is a commonly used technique for detecting and measuring antibodies in blood. This method would help identify which horses were infected with the parasite.
• In total, blood samples were taken from 400 horses across three Egyptian governorates to analyze.

Results and Findings

• The overall seroprevalence rate, or the percentage of horses that tested positive for the parasite, was 13%.
• Among the three regions, the infection was most prevalent in Qalubia (14.17%) and Gharbia (16.67%), both located in the Nile Delta.
• The study also found that seropositivity, or testing positive for the antibody indicating an infection, was higher in mixed-breed horses, stallions, and older horses (aged more than 10 years) compared to others.
• Housing conditions and the time of year also influenced the likelihood of infection. Horses kept in outdoor stables were more prone to infection, as were horses examined in the autumn.
• The presence of snails also increased the likelihood of infection. This is important as snails act as ‘intermediate hosts’ for the parasite, meaning that it needs to pass through snails as part of its lifecycle. This suggests that managing the snail population could be a possible strategy to control the spread of infection.

Implications of the Research

• The findings provided crucial information about the parasite’s prevalence and associated risk factors among Egyptian horses. Thus, the study can potentially guide the development of management programs to mitigate the infection in these animals.
• While the study focused specifically on horse populations, it can contribute to a broader understanding of the epidemiology of Fasciola species, which also affect various other animal species and humans, further underscoring its public health significance.