| Autor: |
Apaa T; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK.; Animal and Plant Health Agency (APHA), Addlestone, UK., Withers AJ; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK.; Animal and Plant Health Agency (APHA), Addlestone, UK., Staley C; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK., Blanchard A; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK., Bennett M; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK., Bremner-Harrison S; School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Southwell, UK.; Vincent Wildlife Trust, Herefordshire, UK., Chadwick EA; School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Southwell, UK.; Organisms and Environment, School of Biosciences, Cardiff University, UK., Hailer F; Organisms and Environment, School of Biosciences, Cardiff University, UK., Harrison SWR; School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Southwell, UK., Loose M; School of Life Sciences, University of Nottingham, Nottingham, UK., Mathews F; School of Life sciences, University of Sussex, Brighton, UK., Tarlinton R; School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, UK. |
| Abstrakt: |
Horseshoe bats are the natural hosts of the Sarbecovirus subgenus that includes SARS-CoV and SARS-CoV- 2. Despite the devastating impact of the COVID-19 pandemic, there is still little known about the underlying epidemiology and virology of sarbecoviruses in their natural hosts, leaving large gaps in our pandemic preparedness. Here we describe the results of PCR testing for sarbecoviruses in the two horseshoe bat species ( Rhinolophus hipposideros and R. ferrumequinum ) present in Great Britain, collected in 2021-22 during the peak of COVID-19 pandemic. One hundred and ninety seven R. hipposideros samples from 33 roost sites and 277 R . ferrumequinum samples from 20 roost sites were tested. No coronaviruses were detected in any samples from R. ferrumequinum whereas 44 and 56 % of individual and pooled (respectively) faecal samples from R. hipposideros across multiple roost sites tested positive in a sarbecovirus-specific qPCR. Full genome sequences were generated from three of the positive samples (and partial genomes from two more) using Illumina RNAseq on unenriched samples. Phylogenetic analyses showed that the obtained sequences belong to the same monophyletic clade, with >95 % similarity to previously-reported European isolates from R. hipposideros . The sequences differed in the presence or absence of accessory genes ORF 7b, 9b and 10. All lacked the furin cleavage site of SARS-CoV-2 spike gene and are therefore unlikely to be infective for humans. These results demonstrate a lack, or at least low incidence, of SARS-CoV-2 spill over from humans to susceptible GB bats, and confirm that sarbecovirus infection is widespread in R. hipposideros . Despite frequently sharing roost sites with R. ferrumequinum , no evidence of cross-species transmission was found. |
