RT Journal Article SR Electronic T1 Respiratory disease in cats associated with human-to-cat transmission of SARS-CoV-2 in the UK JF bioRxiv FD Cold Spring Harbor Laboratory SP 2020.09.23.309948 DO 10.1101/2020.09.23.309948 A1 Margaret J Hosie A1 Ilaria Epifano A1 Vanessa Herder A1 Richard J Orton A1 Andrew Stevenson A1 Natasha Johnson A1 Emma MacDonald A1 Dawn Dunbar A1 Michael McDonald A1 Fiona Howie A1 Bryn Tennant A1 Darcy Herrity A1 Ana Da Silva Filipe A1 Daniel G Streicker A1 Brian J Willett A1 Pablo R Murcia A1 Ruth F Jarrett A1 David L Robertson A1 William Weir A1 the COVID-19 Genomics UK (COG-UK) consortium YR 2020 UL http://biorxiv.org/content/early/2020/09/23/2020.09.23.309948.abstract AB Two cats from different COVID-19-infected households in the UK were found to be infected with SARS-CoV-2 from humans, demonstrated by immunofluorescence, in situ hybridisation, reverse transcriptase quantitative PCR and viral genome sequencing. Lung tissue collected post-mortem from cat 1 displayed pathological and histological findings consistent with viral pneumonia and tested positive for SARS-CoV-2 antigens and RNA. SARS-CoV-2 RNA was detected in an oropharyngeal swab collected from cat 2 that presented with rhinitis and conjunctivitis. High throughput sequencing of the virus from cat 2 revealed that the feline viral genome contained five single nucleotide polymorphisms (SNPs) compared to the nearest UK human SARS-CoV-2 sequence. An analysis of cat 2’s viral genome together with nine other feline-derived SARS-CoV-2 sequences from around the world revealed no shared catspecific mutations. These findings indicate that human-to-cat transmission of SARS-CoV-2 occurred during the COVID-19 pandemic in the UK, with the infected cats developing mild or severe respiratory disease. Given the versatility of the new coronavirus, it will be important to monitor for human-to-cat, cat-to-cat and cat-to-human transmission.Competing Interest StatementThe authors have declared no competing interest.