The epidemiology of bacterial zoonoses in pastoral and dairy cattle in Cameroon, Central Africa.


Journal

Zoonoses and public health
ISSN: 1863-2378
Titre abrégé: Zoonoses Public Health
Pays: Germany
ID NLM: 101300786

Informations de publication

Date de publication:
11 2021
Historique:
revised: 22 01 2021
received: 13 04 2021
accepted: 20 05 2021
pubmed: 16 6 2021
medline: 29 3 2022
entrez: 15 6 2021
Statut: ppublish

Résumé

Previous work identified that bacterial zoonoses (Brucella species, Coxiella burnetii and Leptospira hardjo) were present in Cameroonian pastoral cattle. To assess the characteristics of this zoonotic risk, we analyse seroprevalence of each pathogen and the associated management, herd and environmental factors in Cameroonian pastoral and dairy cattle. Cross-sectional samples included pastoralist herds in the Northwest Region (NWR n = 750) and Vina Division (VD n = 748) and small holder dairy herds in the NWR (n = 60). Exposure to Brucella spp., C. burnetii and L. hardjo were screened for using commercial ELISAs and population adjusted estimates made. In addition, individual, herd and ecological metadata were collected and used to identify risk factors associated with animal-level seropositivity. In the pastoral cattle, seroprevalence to Brucella spp. was relatively low but was higher in the NWR (4.2%, CI: 2.5%-7.0%) than the VD (1.1%: CI 0.5%-2.4%), while L. hardjo seroprevalence was much higher though similar in the NWR (30.7%, CI 26.3%-35.5%) and VD (35.9%, CI 31.3%-40.7%). No differences were noted in C. burnetii seroprevalence between the two study sites (NWR: 14.6%, CI 11.8%-18.0%. VD: 12.4%, 9.6%-15.9%). Compared to pastoral, dairy cattle had lower seroprevalences for L. hardjo (1.7%, CI: 0.0%-4.9%), C. burnetii (0.0%, CI 0.0%-6.0%) but similar for Brucella spp. (5.0%, CI 0.0%-10.6%). Increased odds of Brucella spp. seropositivity were associated with owning sheep or rearing sheep and fencing cattle in at night. Adult cattle had increased odds of being seropositive for both C. burnetii and L. hardjo. Additionally, exposure to C. burnetii was associated with local ecological conditions and L. hardjo was negatively associated with cattle undertaking transhumance. This work highlights that exposure to these 3 important production diseases and occupational zoonoses are widespread in Cameroonian cattle. Further work is required to understand transmission dynamics between humans and livestock to inform implementation of effective control measures.

Identifiants

pubmed: 34129288
doi: 10.1111/zph.12865
doi:

Substances chimiques

Antibodies, Bacterial 0

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

781-793

Subventions

Organisme : Wellcome Trust
ID : WT094945
Pays : United Kingdom

Informations de copyright

© 2021 The Authors. Zoonoses and Public Health published by Wiley-VCH GmbH.

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Auteurs

Robert F Kelly (RF)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Amy Jennings (A)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Jennifer Hunt (J)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Saidou M Hamman (SM)

Regional Centre of Wakwa, Institute of Agricultural Research for Development, Ngaoundere, Cameroon.

Stella Mazeri (S)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Egbe F Nkongho (EF)

School of Life Sciences, University of Lincoln, Lincoln, UK.

Victor N Ngwa (VN)

School of Veterinary Sciences, University of Ngaoundere, Ngaoundere, Cameroon.

Vincent Tanya (V)

Cameroon Academy of Sciences, Yaoundé, Cameroon.

Melissa Sander (M)

Tuberculosis Reference Laboratory Bamenda, Hospital Roundabout, Bamenda, Cameroon.

Lucy Ndip (L)

Laboratory of Emerging Infectious Diseases, University of Buea, Buea, Cameroon.

Paul R Bessell (PR)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Kenton L Morgan (KL)

Institute of Ageing and Chronic Disease and School of Veterinary Science, University of Liverpool, Neston, UK.

Ian G Handel (IG)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Adrian Muwonge (A)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

Barend M de C Bronsvoort (BMC)

Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, UK.

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