Substantial viral diversity in bats and rodents from East Africa: insights into evolution, recombination, and cocirculation.
Microbiome
; 12(1): 72, 2024 Apr 10.
Article
em En
| MEDLINE
| ID: mdl-38600530
ABSTRACT
BACKGROUND:
Zoonotic viruses cause substantial public health and socioeconomic problems worldwide. Understanding how viruses evolve and spread within and among wildlife species is a critical step when aiming for proactive identification of viral threats to prevent future pandemics. Despite the many proposed factors influencing viral diversity, the genomic diversity and structure of viral communities in East Africa are largely unknown.RESULTS:
Using 38.3 Tb of metatranscriptomic data obtained via ultradeep sequencing, we screened vertebrate-associated viromes from 844 bats and 250 rodents from Kenya and Uganda collected from the wild. The 251 vertebrate-associated viral genomes of bats (212) and rodents (39) revealed the vast diversity, host-related variability, and high geographic specificity of viruses in East Africa. Among the surveyed viral families, Coronaviridae and Circoviridae showed low host specificity, high conservation of replication-associated proteins, high divergence among viral entry proteins, and frequent recombination. Despite major dispersal limitations, recurrent mutations, cocirculation, and occasional gene flow contribute to the high local diversity of viral genomes.CONCLUSIONS:
The present study not only shows the landscape of bat and rodent viromes in this zoonotic hotspot but also reveals genomic signatures driven by the evolution and dispersal of the viral community, laying solid groundwork for future proactive surveillance of emerging zoonotic pathogens in wildlife. Video Abstract.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Vírus
/
Quirópteros
Limite:
Animals
País como assunto:
Africa
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article