The Flemish newspaper De Standaard reported that dogs have a 99.5 percent accuracy rate. This rate is more than the sensitivity of PCR laboratory swabs taken from the nose, which is considered the gold standard of the corona virus test. The dogs were trained by experts at the K9 Detection in Ostend. Johan Weckhuyzen, CEO of K9 Detection, said: “There were players who tested negative for the PCR, but we had positive. Eight or nine…"Dogs detect Covid-19 cases a week before PCR tests"