Leptospirosis in Ethiopia: a serological survey in domestic and wild animals.

This research article investigates the prevalence of Leptospirosis, a bacterial disease, in domestic and wild animals in Ethiopia to identify potential health risks to humans. The study found that the disease was prevalent in domestic animals, but absent in tested wild animals and birds, signifying an occupational health concern.

About Leptospirosis

• Leptospirosis is a disease caused by infection with Leptospira bacteria, which can affect both humans and animals.
• The bacteria is often spread through urine of infected animals entering into water or soil, where it can survive for extended periods and infect animals or humans who come into contact with the contaminated sources.

Methodology of the Research

• The research was carried out through a serological survey, mainly through a microscopic agglutination test.
• A total of 758 serum samples from various domestic and wild animals were tested for leptospiral antibodies. The animals included horses, cows, pigs, goats, sheep, camels, dogs, and various species of birds and wild animals.

Findings of the Study

• The study identified that leptospirosis was prevalent in various percentages among domesticated animals: horses (91.3%), cows (70.7%), pigs (57.1%), goats (47.3%), sheep (43.4%), camels (15.4%) and dogs (8.3%).
• All samples from birds and wild animals tested negative for Leptospira antibodies.
• Much of the Leptospira-positive serum demonstrated a reaction to multiple serotypes, with antibodies to serotype butembo being predominant in many of the examined species.
• Nonetheless, for camels and dogs, the predominant serotype reacting was grippotyphosa, not butembo.

Conclusion of the Research

• The investigation found a significant prevalence of leptospirosis in domestic animals in Ethiopia.
• As the disease was not found in the wild animals and birds sampled, it implies that the infection has more focus within domesticated animals – an area where humans have more direct interactions.
• Therefore, the research concludes that leptospirosis may pose an occupational health risk to humans who handle these animals, making it a significant concern from a public health point of view.