The authors report on a possible direct exposure to SARS-CoV-2 from a COVID-19-positive individual to an adult horse. The individual, diagnosed with COVID-19 (Delta B.1.
Studies show that COVID-19 can be transmitted from infected humans to companion animals, but there's no reported clinical infection in horses.
A study tested nasal secretions from 667 horses showing respiratory symptoms and found no cases of SARS-CoV-2, although many tested positive for other respiratory pathogens.
Despite this, 5.9% of healthy Thoroughbreds had antibodies to SARS-CoV-2, indicating horses might experience silent infections, suggesting humans with COVID-19 should limit contact with them.