Predicting uptake of a malignant catarrhal fever vaccine by pastoralists in northern Tanzania: opportunities for improving livelihoods and ecosystem health

Decker, C., Hanley, N. , Czajkowski, M., Morrison, T. , Munishi, L., Keyyu, J., Lankester, F. and Cleaveland, S. (2021) Predicting uptake of a malignant catarrhal fever vaccine by pastoralists in northern Tanzania: opportunities for improving livelihoods and ecosystem health. Ecological Economics, 190, 107189. (doi: 10.1016/j.ecolecon.2021.107189)

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Abstract

Malignant Catarhal Fever (MCF), caused by a virus transmitted from asymptomatic wildebeest, is a lethal disease in cattle that threatens livestock-based livelihoods and food security in many areas of Africa. Many herd owners reduce transmission risks by moving cattle away from infection hot-spots, but this imposes considerable economic burdens on their households. The advent of a partially-protective vaccine for cattle opens up new options for disease prevention. In a study of pastoral households in northern Tanzania, we use stated preference choice modelling to investigate how pastoralists would likely respond to the availability of such a vaccine. We show a high probability of likely vaccine uptake by herd owners, declining at higher vaccine costs. Acceptance increases with more efficaceous vaccines, in situations where vaccinated cattle are ear-tagged, and where vaccine is delivered through private vets. Through analysis of Normalized Density Vegetation Index (NDVI) data, we show that the reported MCF incidence over 5 years is highest in areas where the mean and interannual varibility in vegetative greeness is relatively low and where herds sizes are smaller. Trends towards lower rainfall and greater landscape-level constraints on cattle movement suggest that MCF avoidance through traditional movement away from wildebeest will become more challenging and that demand for an MCF vaccine will likely increase.

Item Type:Articles
Additional Information:This research was carried out with funding from a UKRI GCRF Global Impact Accelerator Award (EP/S51584X/1). CD was supported by a scholarship grant from the Karimjee Jivanjee Foundation. SC, NH and TM were supported by a grant from UKRI GCRF Sustainable Enhancement of Agriculture and Aquaculture Production (BB/T012285/1). MC gratefully acknowledges support of the National Science Centre of Poland (Sonata Bis, 2018/30/E/HS4/00388). We thank Lazaro Arangare and Kelvin Munisi for field support, and Dassa Nkini and Joram Buza from the Nelson Mandela African Institution of Science and Technology for administrative and supervisory support in Tanzania.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hanley, Professor Nicholas and Cleaveland, Professor Sarah and Lankester, Dr Felix and Morrison, Dr Thomas and Czajkowski, Dr Mikolaj
Authors: Decker, C., Hanley, N., Czajkowski, M., Morrison, T., Munishi, L., Keyyu, J., Lankester, F., and Cleaveland, S.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
College of Social Sciences > Adam Smith Business School
Journal Name:Ecological Economics
Publisher:Elsevier
ISSN:0921-8009
ISSN (Online):1873-6106
Published Online:16 August 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Ecological Economics 190:107189
Publisher Policy:Reproduced under a Creative Commons licence

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
306188EPSRC-GCRF Global Impact Accelerator Account 2018 UofGJonathan CooperEngineering and Physical Sciences Research Council (EPSRC)EP/S51584X/1Research and Innovation Services
308960Cattle vaccination against malignant catarrhal fever: balancing pastoral livelihoods, food security and ecosystem integrity in the Serengeti, TanzaniaSarah CleavelandBiotechnology and Biological Sciences Research Council (BBSRC)BB/T012285/1Institute of Biodiversity, Animal Health and Comparative Medicine