"While all available vaccines in Canada are safe and effective, NACI still recommends that in the context of limited vaccine supply, initial doses of mRNA vaccines should be prioritized for those at highest risk of severe illness and death and highest risk of exposure to COVID-19", said a statement from the committee. Earlier, the committee recommended the vaccine for people under the age of 65, saying there was insufficient data to make a recommendation about older adults at the time.
Pfizer/BioNTech vaccine doses for Europe, including the United Kingdom, are being produced in BioNTech's German manufacturing sites, as well as in Pfizer's manufacturing site in Belgium. During a press conference, the premier said that NACI "is messing everything up". He said, "There are people who have concerns".
The World Health Organization has sought to calm fears amongst African officials about the safety of the Oxford-AstraZeneca vaccine after several European nations halted their roll outs over concerns the jab might cause blood clots in a few patients.
Health Canada's Chief Medical Adviser Dr. Supriya Sharma said last week there is no biological evidence that would show how the vaccine could cause blood clots.
The ministry reassured citizens that the vaccines used in the Moroccan vaccination campaign will continue to be monitored.
While the agency confirmed that reports have so far come from Germany and Norway, Cooke said that the agency is "receiving additional information from member states as we speak" but that it was now not possible to indicate whether or not these were the only cases. "This isn't blaming anybody".
That is why it is crucial to have systems in place to track and quickly evaluate any potential serious adverse events related to vaccines, he said.
But a new agreement for Germany's IDT Biologika to help produce the single-shot Johnson & Johnson vaccine would offer Europe greater certainty, Germany's economy minister said Monday.
Researchers found, for example, that an antigen in some batches of the flu virus administered in parts of northern Europe in 2009, in rare cases, triggered an immune response leading to narcolepsy in people with a certain genetic makeup.
The Africa Centres for Disease Control (Africa CDC) in Addis Ababa said it was reviewing its guidance on the AstraZeneca shot in an emergency meeting on Tuesday afternoon.
The British prime minister told MPs in the House of Commons it was the "best thing he could say" in response to Conservative MP Steve Brine's question about what had led to "the disinformation, and apparent abandonment of scientific evidence in certain European Union member states around the Oxford AstraZeneca jab". She noted that blood clots occur regularly in the population.
AstraZeneca is now mostly being administered in pharmacies and doctors offices in Ontario - in Toronto, Windsor and Kingston.
The largest user of AstraZeneca's vaccine, however, is India.
Authorities in Uganda, Somalia and Nigeria have also said they believe the vaccine is safe to use.