Keywords :
Burkina Faso; Cattle; Crimean-Congo; Haemorrhagic fever virus; Seroepidemiologic studies; Antibodies, Viral; Animals; Burkina Faso/epidemiology; Seroepidemiologic Studies; Female; Male; Risk Factors; Enzyme-Linked Immunosorbent Assay/veterinary; Prevalence; Hemorrhagic Fever, Crimean/veterinary; Hemorrhagic Fever, Crimean/epidemiology; Hemorrhagic Fever Virus, Crimean-Congo/immunology; Hemorrhagic Fever Virus, Crimean-Congo/isolation & purification; Antibodies, Viral/blood; Cattle Diseases/epidemiology; Cattle Diseases/virology; Cattle Diseases; Enzyme-Linked Immunosorbent Assay; Hemorrhagic Fever Virus, Crimean-Congo; Hemorrhagic Fever, Crimean; Veterinary (all)
Abstract :
[en] [en] BACKGROUND: Crimean-Congo hemorrhagic fever (CCHF) is a zoonotic disease caused by an Orthonairovirus of the Nairoviridae family transmitted by tick bites and also contact with infected blood, tissues, or body fluids. Until now, fewer studies have been conducted on animals in Burkina Faso.
AIM: This study was conducted to investigate the seroprevalence and risk factors of CCHF in two provinces of Burkina Faso.
METHODS: Serum samples were collected from 371 bovine animals. In addition, questionnaire surveys were performed with cattle breeders. The double-antigen sandwich enzyme-linked immunosorbent assay test was used to determine the presence of antibodies against the CCHF virus in serum samples.
RESULTS: The results showed an overall prevalence of 72.2% [95% confidence interval (CI): 67.6%-76.7%)]. Within the 74 herds included in the study, a herd prevalence of 96% (95% CI: 91.4%-100%) was obtained. The prevalence was significantly higher in Mouhoun province (80%, 95% CI: 74%-86%) compared to Kénédougou province (65.6%, 95% CI: 59.1%-72.2%). Multivariable regression analysis showed that females were more likely to be infected (OR = 1.99, 95% CI: 1.1-3.6, p = 0.023) than males. In addition, cross-breed animals (OR = 6.42, 95% CI: 1.71-24.14, p = 0.006) were more likely to be infected compared to local-bred animals. This study revealed the presence of antibodies of the CCHF virus in cattle in the study area, indicating the need to implement control measures in the veterinary sector.
CONCLUSION: Despite the importance of CCHF in public health, no study has been implemented regarding this condition in animals in Burkina Faso. This study described evidence of cattle exposure to the virus in Burkina Faso.
Funding text :
The authors are grateful to the Royal Society for Tropical Medicine and Hygiene (RSTMH) for funding this study and to the National Livestock Laboratory [Laboratoire National d\u2019Elevage (LNE) de la Direction G\u00E9n\u00E9rale des Services V\u00E9t\u00E9rinaires (DGSV), Burkina Faso] for the technical support during the serological analyses. The authors also thank the Provincial Directorates of Mouhoun and Kenedougou as well as the communal officers for their valuable assistance during field investigations. This study was funded by the Royal Society for Tropical Medicine and Hygiene through its small grant program.
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