Teach your anxious child the importance of only collecting information from trusted sources.
You can find up-to-date information about COVID-19 from your local public health unit, or from the Ontario Public Health website: https://www.publichealthontario.ca/.
You can also find reliable information from the World Health Organization (https://www.who.int/), and the government of Canada (https://www.canada.ca/…/d…/coronavirus-disease-covid-19.html)