The National Advisory Committee on Immunization said on Thursday that Canadians may consider getting a vaccine every 90 days, the tightest deadline to date, according to Blacklock's Reporter.

"A shorter interval of at least three months may be warranted in the context of heightened epidemiological risk as well as operational considerations for the efficient deployment of the COVID-19 vaccination program," a summary of a National Advisory Committee on Immunization statement said on Sept. 1.

Just weeks ago the Department of Health said a booster every nine months was sufficient.