# Detection of Novel Orthobunyavirus Reassortants in Fatal Neurologic Case in Horse and Culicoides Biting Midges, South Africa

**Authors:** Matshepo Elizabeth Rakaki, Miné van der Walt, June Williams, Marietjie Venter

PMC · DOI: 10.3201/eid3107.241800 · 2025-07-01

## TL;DR

Researchers found new combinations of viruses in horses and midges in South Africa, highlighting the need for ongoing surveillance.

## Contribution

The study reports the detection of novel orthobunyavirus reassortants in horses and Culicoides midges in South Africa.

## Key findings

- Shuni virus was detected in horses and ovine fetuses.
- Shamonda and Caimito virus reassortants were identified in Culicoides midges.
- Genomic surveillance is crucial for tracking orthobunyavirus infections in Africa.

## Abstract

We detected Shuni virus in horses and ovine fetuses and Shamonda virus in a caprine fetus in South Africa. We identified a Shuni/Shamonda virus reassortant in a horse and Shuni/Caimito, Shamonda/Caimito, and Shamonda/Sango virus reassortants in Culicoides midges. Continued genomic surveillance will be needed to detect orthobunyavirus infections in Africa.

## Full-text entities

- **Diseases:** orthobunyavirus infections (MESH:D002044)
- **Species:** Equus caballus (domestic horse, species) [taxon 9796], Shamonda virus (no rank) [taxon 159150], Orthobunyavirus (genus) [taxon 11572], Shuni virus [taxon 159148]

## Figures

3 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12205456/full.md

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Source: https://tomesphere.com/paper/PMC12205456