So far, all signs are favorable for the vaccine, which is already being distributed in the U.K. Canada also has authorized the vaccine.
For many Americans, the vaccines couldn't come soon enough.
In a statement, Stephen Powis, national Medical Director for the NHS, said: "As is common with new vaccines the MHRA have advised on a precautionary basis that people with a significant history of allergic reactions do not receive this vaccination after two people with a history of significant allergic reactions responded adversely yesterday".
FDA consent could come as early as Friday or Saturday, followed by the first US injections on Sunday or Monday, Moncef Slaoui, chief adviser to the Trump administration's Operation Warp Speed vaccine development program, told Fox News.
Health officials believe the Moderna COVID-19 vaccine could be approved for use within weeks.
The Moderna vaccine, which officials expect will also receive approval in Canada, is less complicated to transport and Henry said they should be able to deliver that directly to seniors in care. The US regulators stressed that doctors should closely monitor the side effect of the vaccine and continue to watch on how many people it strikes. She said for those in science, there's more transparency to the vaccine development process now than ever before, with the ability to watch the regulatory process and examine interim results of trials.
"We're obviously well prepared as the second largest city in the province to receive, probably be a relatively small number of batches the first go around", said Watson. Henry said these people are another group at risk for developing severe illness and ending up in the hospital.
When a person is exposed to COVID-19, the body recognizes the virus' spike proteins of the same shape.
"Of the six dead, three are over the age of 55", the FDA clarified.
On the heels of the news that the Pfizer COVID-19 vaccine has been granted approval for use in Canada, the question now becomes what's next in the approval pipeline?
"The interesting thing about these trials right now is... we actually thought they'd be a bit longer but there's so much COVID out there (...) they have gone so fast because so many people got exposed..." said Grindrod. "The upside of that is that these trials moved faster, and it probably moved us toward a vaccine faster... the downside is there's an terrible lot of virus out there..."
"This has been a scary time - we've just gone through nine months of not really understanding 'are we going to get sick?' (...) the vaccine is just another thing..." said Grindrod.
Who should not get the vaccine?
It would not be the first time an entity linked with coronavirus vaccines has been targeted by cybercriminals. "Unfortunately, we do not yet know if these vaccines work in people who are immunocompromised and if they're safe".