It is also now being trialled in South Africa.
A COVID-19 vaccine developed by a state-owned Chinese pharmaceutical firm has been administered to about a million people under the government's emergency use scheme, the company's chairman said.
"We're really delighted with the results".
Late-stage, or phase-three, trials are ongoing to confirm the findings, researchers said, and to test whether the vaccine protects against infection with SARS-CoV-2 in a broad range of people, including people with underlying health conditions.
"And the first data are really encouraging".
'We were pleased to see that our vaccine was not only well tolerated in older adults; it also stimulated similar immune responses to those seen in younger volunteers.
Trudeau's response comes after Ontario Health Minister Christine Elliott said on Wednesday that the province is expecting to get around 1.6 million doses of Pfizer's vaccine and around 800,000 of Moderna's for proper distribution by March 2021.
A coronavirus vaccine created by a collaboration between drugmaker AstraZeneca and the University of Oxford is showing results that it is safe and triggers a similar immune response among adults of all ages, according to preliminary results of their phase 2 study.
Numerous trials are taking place overseas, as China has largely brought the virus under control within its borders. For this reason, the study includes only healthy participants and not those with co-morbidities.
"Since elderly populations will be one of the priority groups to receive a vaccine when one is available, this is good news".
Volunteers got two doses of the vaccine or a placebo, and no serious side effects related to the AZD1222 vaccine were reported, the researchers said.
But British efforts, lead by the Oxford vaccine group, have not yielded public results as of yet.
The symptoms were also similar to those seen in a flu vaccine, including tiredness and headache. Notably, anti-spike antibody responses in the study increased after a boost vaccination at one month but neutralizing anti-vector antibody responses did not.
Almost three-in-five Australians say they will definitely receive a coronavirus vaccine once it is available, a study has found.
Scientists have reported progress in developing a coronavirus vaccine. "We hope that this means our vaccine will help to protect some of the most vulnerable people in society, but further research will be needed before we can be sure".
"We still need to collect all the data on that though", she said.
China National Pharmaceutical Group (Sinopharm) said on Thursday that it has inoculated nearly a million people with its vaccine in the country.