The guidance on Moderna came several weeks after issuing their recommendations on the rival Pfizer vaccine.

In a report released on Monday, Elisha Are and Caroline Colijn looked at the exponential growth of the virus linked to the U.K. strain.

On a per capita basis, the U.S. has so far inoculated 5.2 per cent of its population, while Canada stands at 1.09.

As millions of doses of mRNA COVID-19 vaccines are being given around the world, scientists believe this technology could usher in a new era in vaccinology.

The domestic arm of the company behind the first coronavirus vaccine approved by Health Canada says the government should do more to attract the pharmaceutical sector to Canada.

Wellington-Dufferin-Guelph Public Health says it is pausing first-dose COVID-19 vaccinations for health-care workers due to Pfizer production delays.

A Pfizer spokeswoman said use of the vaccine on pregnant women is "a health regulatory organization's decision."

The news comes as the Pfizer-BioNTech coronavirus vaccine reduction plan goes into effect, resulting in a vaccine delivery hold-up for Canada during the week of Jan. 25.

On Monday, the premier said first dose appointments would be paused due to vaccine supply issues from Pfizer but that second dose appointments would not be cancelled.

Manitoba is expecting further reductions in the amount of Pfizer vaccine it receives.