Sero-prevalence, epidemiology, and public health significance of small ruminant brucellosis

Abstract

Background: Brucellosis is sort of a common zoonotic illness, and it spreads mostly from livestock like cattle, sheep, goats, pigs, and camels. In practice it happens when people or animals have direct contact with infected tissues, or when contaminated raw products get eaten. For small ruminants, brucellosis becomes a real concern. It brings, public health problems and economic stress, especially in places where it is already endemic. Objective: The aim here is to go over the present epidemiological picture of brucellosis, underline why small ruminant brucellosis matters for public health, and show the economic weight it creates in both domestic as well as global livestock production systems. Methods: This is a narrative review, based on existing literature. The focus was on etiology, transmission pathways, clinical findings, diagnostic options, and the control measures that have been discussed. Small ruminant species were especially emphasized in the search and synthesis. Results: Brucella melitensis and Brucella ovis were pinpointed as the main causes for small ruminant brucellosis. In general, Brucella melitensis is linked with goats and Brucella ovis is linked with sheep. The clinical story often includes late stage abortions, stillborn births and reduced offspring survival in females. In males you can see orchitis, plus epididymitis. As for where the pathogen comes from, it includes aborted fetuses, fetal membranes, vaginal secretions, and also milk, when shedding occurs. Diagnostics can be grouped into organism detection and immune response identification. Treating infected animals is usually not recommended, because failure rates are high, and because eradication programs might be complicated. Vaccination, combined with rigorous hygiene measures, stays the most effective prevention approach. Conclusion: Brucellosis is a serious zoonotic problem, also a real economic weight, for livestock production systems across the whole world. For effective disease control you need collective actions between governments, veterinarians and public health agencies, with a strong focus on prevention in reservoir hosts, plus correct disposal of animals that are infected, and continued vaccination programs that can lower transmission. That way, in the long run, the public health is protected, even when the situation gets stubborn.