Seroepidemiological investigation of Crimean Congo hemorrhagic fever virus in livestock in Uganda, 2017.

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dc.contributor.authorNyakarahuka, Luke
dc.contributor.authorKyondo, Jackson
dc.contributor.authorTelford, Carson
dc.contributor.authorWhitesell, Amy
dc.contributor.authorTumusiime, Alex
dc.contributor.authorMulei, Sophia
dc.contributor.authorBaluku, Jimmy
dc.contributor.authorCossaboom, Caitlin M
dc.contributor.authorCannon, Deborah L
dc.contributor.authorMontgomery, Joel M
dc.contributor.authorLutwama, Julius J
dc.contributor.authorNichol, Stuart T
dc.date.accessioned2023-11-24T11:37:37Z
dc.date.available2023-11-24T11:37:37Z
dc.date.issued2023-11
dc.description.abstractAbstract Crimean-Congo Hemorrhagic fever (CCHF) is an important zoonotic disease transmitted to humans both by tick vectors and contact with fluids from an infected animal or human. Although animals are not symptomatic when infected, they are the main source of human infection. Uganda has reported sporadic human outbreaks of CCHF in various parts of the country since 2013. We designed a nationwide epidemiological study to investigate the burden of CCHF in livestock. A total of 3181 animals were sampled; 1732 cattle (54.4%), 1091 goats (34.3%), and 358 sheep (11.3%) resulting in overall livestock seropositivity of IgG antibodies against CCHF virus (CCHFV) of 31.4% (999/3181). Seropositivity in cattle was 16.9% and in sheep and goats was 48.8%. Adult and juvenile animals had higher seropositivity compared to recently born animals, and seropositivity was higher in female animals (33.5%) compared to male animals (24.1%). Local breeds had higher (36.8%) compared to exotic (2.8%) and cross breeds (19.3%). Animals that had a history of abortion or stillbirth had higher seropositivity compared to those without a history of abortion or stillbirth. CCHFV seropositivity appeared to be generally higher in northern districts of the country, though spatial trends among sampled districts were not examined. A multivariate regression analysis using a generalized linear mixed model showed that animal species, age, sex, region, and elevation were all significantly associated with CCHFV seropositivity after adjusting for the effects of other model predictors. This study shows that CCHFV is actively circulating in Uganda, posing a serious risk for human infection. The results from this study can be used to help target surveillance efforts for early case detection in animals and limit subsequent spillover into humans.en_US
dc.description.sponsorshipThis study was funded by United States Centers for Disease Control and Prevention (CDC) through the National Center for Emerging and Zoonotic Infectious Disease (NCEZD Grant number RFA-CK-13-001. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.en_US
dc.identifier.citationNyakarahuka, Luke, Jackson Kyondo, Carson Telford, et al. 'Seroepidemiological Investigation of Crimean Congo Hemorrhagic Fever Virus in Livestock in Uganda, 2017', PloS One, vol. 18/no. 11, (2023), pp. e0288587-e0288587.en_US
dc.identifier.issnISSN 1932-6203
dc.identifier.issnEISSN 1932-6203
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/9375
dc.language.isoenen_US
dc.publisherPublic Library of Scienceen_US
dc.subjectLivestock; Crimean-Congo hemorrhagic fever; Uganda; Goats ; Sheep; Ticks ; Ovine abortion ; Stillbirthsen_US
dc.titleSeroepidemiological investigation of Crimean Congo hemorrhagic fever virus in livestock in Uganda, 2017.en_US
dc.typeArticleen_US
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