Siemiatycki: We're modelling the extent of COVID-19 with flawed data. Let's fix that

It is disheartening that, three months into the COVID-19 pandemic, we don’t know such key information as the prevalence of the infection in the population, the trend lines of this prevalence and the proportion of infected people who are asymptomatic. But the actions taken to control the epidemic depend on knowing these factors. The public-health pilots who are determining policies are flying with faulty instruments. Read More