The University Health Network (UHN) says 150 volunteers received a vaccine, which usually happens the end of the day to ensure already thawed doses do not go to waste.
Lead author of the report David Werring, professor of clinical neurology at UCL, says the most common form of vaccine-induced clots is still CVST, but the reason behind this remains unknown.
The risk of VITT in Canada has been estimated to be approximately 1 per 55,000 first doses, but several possible cases are still under investigation.
Some Ontarians who are now eligible to receive their second dose of the AstraZeneca vaccine are complaining about a lack of clarity around the booking process, even as Solicitor General Sylvia Jones urges those awaiting a second jab to "be a little patient".
After hearing about unfilled appointments over the weekend, Sue called the provincial hotline, hoping to book her parents, who are in their 80's, appointments for second shots.
"It's incredibly frustrating from my perspective that I was told there is a rule and then exceptions were applied, and it wasn't given to the group that is the most vulnerable", said Sue.
Masks, social restrictions return to Australia's Melbourne after fresh outbreak
The ACT had previously lifted its travel restrictions with Victoria on Monday, before the new cases were recorded. Private gatherings indoors will be limited to five people and public gatherings will be limited to 30 people.
The AstraZeneca vaccine booking for adults aged 18 and above was made available via https://vaksincovid.gov.my for residents in Johor, Kuala Lumpur, Penang, Sarawak and Selangor on a first-come, first-served basis.
In March, South Sudan received 132,000 doses from Covax but the country's national taskforce on Covid-19 made a decision to return before they expire after discussing the matter with the World Health Organization (WHO).
The AstraZeneca vaccine inoculation is scheduled to be held between June 7 to July 27 for the first dose of the vaccine.
Another 10,000 doses of AstraZeneca expire next month and the province has more than 300,000 doses in stock. "I want to reiterate that people who received the dose should feel very confident about their health". "The good point is that we have lots of people who are eager to get their second doses".
Meanwhile, satay operator Hezlinda Md Samsudin, 46, said she was grateful that eventually she could register for the AstraZeneca vaccination for herself and her daughter 55 minutes after the registration opened.
Speaking with CP24 on Tuesday afternoon, Jones said that the province does have "sufficient supply" but will be distributing the vaccine to fewer pharmacies than it did during March's pilot project as part of a "cluster" approach.
She said that rather than calling pharmacies to book an appointment themselves, those eligible for a second dose should wait to be contacted in the coming days.