Canada has approved the Moderna COVID-19 vaccine days after it rolled out public vaccination using the Pfizer's jab.

Officials said on Wednesday they expect doses of Moderna vaccine to arrive in Canada within 48 hours of approval.

Reports indicate that the country signed a deal to get 168,000 doses of the vaccine by the end of December.

Moderna said on Thursday it expects to have between 100 million and 125 million doses of its experimental COVID-19 vaccine available globally in the first quarter of 2021.

Results from an early-stage trial showed that the vaccine, mRNA-1273, produced high levels of binding and neutralizing antibodies that declined slightly over time, but remained elevated in all participants three months after the booster vaccination, the company said.