Explanation

In March 2022, the first potential case of deer-to-human COVID-19 transmission reported in Canada.

The researchers identified highly mutated clusters of SARS-CoV-2 genomes in white-tailed deer. 

For the study, the researchers analyzed 300 samples from white-tailed deer in South-western and Eastern Ontario. They found that 17 of the deer in South-western Ontario tested positive for SARS-CoV-2.