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Synchronized seasonal excretion of multiple coronaviruses coincides with high rates of coinfection in immature bats
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Synchronized seasonal excretion of multiple coronaviruses coincides with high rates of coinfection in immature bats
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Journal Article
Synchronized seasonal excretion of multiple coronaviruses coincides with high rates of coinfection in immature bats
2025
Overview
Bats host a high diversity of coronaviruses, including betacoronaviruses that have caused outbreaks and pandemics in humans and other species. Here, we study the spatiotemporal dynamics of co-circulating coronaviruses in
Pteropus spp
bats (flying foxes) in eastern Australia over a three-year period across five roost sites (
n
= 2537 fecal samples). In total, we identify six betacoronavirus clades, all within the nobecovirus subgenus. Genome sequencing supports overall clade assignments, however, also demonstrates the important role recombination has played in both the long-term and contemporary evolution of these viruses. Using a statistical framework that integrates individual and population level data, we assess the variability in prevalence of viral clades over space and time. Coronavirus infections and co-infections are highest among juveniles and subadults, particularly around the time of weaning. The overlapping shedding dynamics across multiple clades suggest opportunities for recombination, especially in younger bats. Understanding the ecological and host-viral drivers of these seasonally dynamic infections, co-infections, and recombination events will inform future predictive frameworks for coronavirus emergence in humans and other animals.
Bats harbor diverse coronaviruses but temporal dynamics are less well studied. Here, the authors analyzed coronaviruses in Australian flying foxes over 3 years showing peak shedding and co-infections in juveniles and subadults and providing evidence of historical and contemporary recombination between viral clades.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 45/29
/ 45/77
/ 49/90
/ Animals
/ Bats
/ Coronavirus - classification
/ Coronavirus - isolation & purification
/ Coronavirus Infections - epidemiology
/ Coronavirus Infections - veterinary
/ Coronavirus Infections - virology
/ COVID-19
/ Feces
/ Genomes
/ Humanities and Social Sciences
/ Metadata
/ Science
/ Seasons
/ Shedding
/ Viruses
/ Weaning
/ Zoonoses
