Dog screening, followed by swab testing, will pick up 91 per cent of infections While even the quickest COVID tests take 15 minutes to show a result, the dogs can sniff out the disease in seconds London: Sniffer dogs can help prevent the spread of Coronavirus by detecting SARS-CoV2, the virus behind COVID-19, according to a study, which found that the canines can be 88 per cent accurate in sniffing the virus, the media reported. The study, involving scientists from the London School of Hygiene and Tropical Medicine and Durham University, believe the dog screening, followed by swab testing, wi...