Effective Antibody Response of African Wild Dogs (Lyacon Pictus) to Canine Distemper Vaccination With a Live Attenuated Vaccine

Robin Gieling, Anne Schmidt-Küntzel, Karina Flores-Pineda, Mick Bailey, Nicola J Rooney, Laurie Marker*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

Vaccinating African wild dogs (Lycaon pictus) against canine distemper virus (CDV) using live attenuated vaccines (LAVs) has been controversial due to limitations in the vaccines’ effectiveness and safety. However, CDV is a significant pathogen for African wild dogs and CDV LAVs are currently the only vaccines readily available on the African continent, making them a crucial tool for in situ conservation. There are few studies exploring immunogenicity of CDV LAVs, and even less information pertaining to optimal vaccination protocols. This study reports the use of CDV LAV Vanguard™ Plus 5/L in 16 African wild dogs from two sibling groups with initial inoculation at approximately 6-7 wk of age. The majority (81%, n=13) of pups generated protective titers after initial vaccination. One pup died of CDV-suspected neurological disease within 17 days of initial vaccination. All remaining dogs received a second dose and 100% of those achieved protective immunity (as per domestic dog reference values). Protective antibody titers were maintained throughout the sampling period of 284 and 373 d from the second vaccination. The risk of possible vaccine-induced disease cannot be excluded, but may be a sustainable risk compared to the protective potential of CDV LAVs for African wild dogs.
Original languageEnglish
Pages (from-to)148-153
Number of pages6
JournalJournal of Zoo and Wildlife Medicine
Volume56
Issue number1
DOIs
Publication statusPublished - 10 Mar 2025

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