Temporal Dynamics of Infections and the Composition of Spp. in Calves in the Mnisi Communal Area, Mpumalanga, South Africa

Overview

Journal Microorganisms

Specialty Microbiology

Date 2023 Feb 25

PMID 36838430

Authors

S Marcus Makgabo

Kelly A Brayton

Louise Biggs

Marinda C Oosthuizen

Nicola E Collins

Affiliations

Soon will be listed here.

Abstract

Bovine anaplasmosis, caused by , is one of the most important tick-borne diseases of cattle. is known to be present in the Mnisi community, Mpumalanga Province, with frequent cases of anaplasmosis reported. This study investigated the infection dynamics in calves ( = 10) in two habitats in the study area over 12 months. A duplex real-time PCR assay targeting the gene of and the gene of confirmed the presence of in five calves in a peri-urban area from the first month, but in only two calves at the wildlife-livestock interface and only after six months. These results were confirmed by 16S rRNA microbiome analysis. Over 50 genotypes were detected in the calves along with five novel Msp1a repeats. Calves in the peri-urban area were more likely to be infected with than calves in the wildlife-livestock interface. Cattle management, acaricide treatment, and cattle density could explain differences in infection prevalence in the two areas. Our results revealed that most calves were superinfected by distinct strains within the study period, indicating continuous challenge with multiple strains that should lead to robust immunity in the calves and endemic stability in the area.

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