WSKG (https://wskg.org/npr_story_post/the-science-behind-a-14-day-quarantine-after-possible-covid-19-exposure/canadian-border-agents-are-handing-people-entering-the-country-a-sheet-from-the-public-health-agency-of-canada-that-instructs-everyone-to-self-isolate-for-14-days-and-monitor-themselves-for-any-sympto/)