Dogs picked up 97 per cent of those PCR positive cases, and reached "100 per cent sensitivity" for asymptomatic cases. https://www.9news.com.au/national/dogs-can-sniff-out-and-detect-covid-19-better-than-a-rat-rapid-antigen-test/75e6eb26-6c8e-46fa-b9f2-d682488c7807