"And the jab – it didn’t hurt at all," Queen Elizabeth said in remarks released by Buckingham Palace.

Federal officials revealed how many COVID-19 vaccine doses are set to arrive in Canada in the next few weeks, and said efforts are set to 'scale-up' rapidly.

However, EU officials remained wary about supply.

As COVID-19 vaccine supplies gradually ramp up across the country, most provinces and territories have released details of who can expect to receive a shot in the coming weeks.

They are also in talks to test a vaccine modified to protect specifically against the highly transmissible new variant first found in South Africa.

Hundreds of people said they were able to book COVID-19 vaccination appointments for their loved ones Wednesday thanks to a workaround shared by a computer programmer.

Advocates for senior citizens say they worry about logistical issues in getting seniors to vaccination sites.

Natural post-infection immunity could protect COVID-19 patients, experts say, but more research is needed to influence vaccination strategies.

More fulsome details of the European Union's contract with AstraZeneca show that the bloc waived the right to sue if deliveries of the vaccines under contract are delayed.

The agency's independent advisers will debate if the evidence is strong enough to recommend the long-anticipated shot.