Epidemiologists look at the effective reproductive number of COVID-19, which describes how many other people an infected person will pass the coronavirus onto on average. Public health experts like to see the value significantly below one so cases don't snowball and spread out of control. The effective reproductive number of COVID-19 in Canada continues to hover at 1.4, the Public Health Agency of Canada reported on Friday. Christopher Labos, a physician in Montreal with an epidemiology degree, said the effective reproductive number also varies depending on the population in which a virus is spreading. Dr. Eileen de Villa, Toronto's medical officer of health, announced new restrictions for restaurants to help curb COVID-19 spread.

Source: CBC News September 29, 2020 07:52 UTC