Coronavirus: Ontario declares 2nd state of emergency, issues stay-at-home order “One in five tests is coming back positive for COVID-19,” Loh said. “What that means is, looking at both the testing being done as well as the numbers of cases … we’re seeing a significant increase in the risk and a significant increase in the transmission that is occurring in our community.”Loh said, to put it in perspective, that the World Health Organization said positivity rates should be kept at around three per cent or less.“So we are significantly magnitudes above that and it represents just the risk that exists with any sort of interaction with people outside of your home,” he said.[ Sign up for our Health IQ newsletter for the latest coronavirus.