In documents released Tuesday, officials said the known delivery reductions to Ontario are 'substantial' and vary week to week.

Officials said that from Dec. 13 to Jan. 9, 21 "significant" but non-severe "adverse events" were reported, none of which involved people requiring hospitalization.

Prime Minister Justin Trudeau has said every Canadian who wants to get a coronavirus vaccine will be able to get one by September 2021.

Residents of the Perley and Rideau Veterans' Health Centre received vaccinations against COVID-19 on Tuesday, the first long-term care home residents in Ottawa to get jabs.

Ontario defended its COVID-19 vaccination efforts Monday as the province confirmed three more cases of a contagious new strain of the virus.

"Paramedics are within the health-care field and will be within the first phase which is extending to about March."

Ontario will lay out the order and timeframe in which specific population groups will be immunized against COVID-19, possibly within the next few weeks.

"There may be some restrictions in terms of travel or other restrictions that may arise as a result of not having a vaccination."

Key tasks include delivery, logistics and administration, clinical guidance as well as public education and outreach.

The Ontario Medical Association says health-care workers, first responders and seniors living in long-term care and retirement homes should be the first to be immunized.