A multicenter study in Cameroon has established Brucella abortus as the sole circulating Brucella species in livestock across three regions, revealing an 8.3% prevalence in cattle and 7.3% in goats. Conducted from February 2021 to May 2023, the study analyzed 4,612 animals using bacterial culture, real-time PCR, and serologic tests. The research highlights the limitations of using serology alone for species identification and emphasizes the need for complementary diagnostic methods. The genomic findings suggest a longstanding presence of this strain in the region, underscoring public health implications for zoonotic transmission.
1. B. abortus is the only Brucella species found in Cameroon livestock. 2. Study conducted on 4,612 animals including cattle, goats, sheep, and pigs. 3. Prevalence: 8.3% in cattle, 7.3% in goats. 4. Cultural positivity rate was low at 0.8%. 5. Serologic tests can't differentiate between Brucella species. 6. Importance of combining serological & molecular methods emphasized. 7. Genomic analysis indicates long-term circulation of B. abortus in sub-Saharan Africa. 8. Samples collected at slaughterhouses due to lack of livestock traceability.
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