Governments need to decide now whether they’ll switch to requiring three doses for a valid proof of vaccination against COVID-19 instead of the current two, according to an Ontario medical expert.

“If we would want to change our definitions for a vaccine certificate from two to three doses, it would need to be done very swiftly,” said Juni, science adviser of the Ontario COVID-19 Science Advisory Table.

https://www.cbc.ca/radio/checkup/is-it-time-to-start-living-with-covid-19-1.6338856/should-vaccine-passports-require-3-doses-instead-of-2-experts-weigh-in-1.6341193