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Pfizer to accelerate COVID-19 vaccine deliveries as Health Canada approves 4th vaccine

Pfizer to accelerate COVID-19 vaccine deliveries as Health Canada approves 4th vaccine-Milenio Stadium-Canada
Johnson & Johnson’s one-dose vaccine has received regulatory approval from Health Canada for use in this country. (Justin Tallis/AFP/Getty Images)

Canada’s national campaign to inoculate people against the novel coronavirus got good news on two fronts today: one vaccine maker now plans to accelerate its deliveries and federal regulators have cleared a fourth COVID-19 vaccine for use in this country.

Health Canada approves AstraZeneca’s COVID-19 vaccine

Prime Minister Justin Trudeau said today that, after negotiations with the federal government, vaccine manufacturer Pfizer has agreed to move up delivery of 3.5 million doses of its COVID-19 vaccine — originally scheduled to arrive in the summer — to the next three months.

The company will deliver an additional 1.5 million doses in March, one million more doses in April and another million in May, Trudeau said, bringing the total number of doses of all approved vaccines expected to arrive by the end of this month to 8 million.

The announcement came just hours after Health Canada approved the use of Johnson & Johnson’s COVID-19 vaccine in Canada, providing provinces and territories with another vaccine in addition to those previously approved from Pfizer-BioNTech, Moderna and AstraZeneca-Oxford. (A second version of the AstraZeneca-Oxford vaccine that is biologically identical but manufactured under different conditions by the Serum Institute of India has also been authorized.)

The Johnson & Johnson vaccine, produced by the U.S. health care giant’s pharmaceutical subsidiary, Janssen Inc., is the first single-shot vaccine to be approved in Canada.

“As long as it takes, we’ll be there with what people need to get through this pandemic. That means we’re sending more and more vaccines to the provinces and territories in the coming weeks and months,” Trudeau told a press conference today.

The new Pfizer delivery schedule and the Johnson & Johnson approval are expected to accelerate Canada’s vaccine rollout, which has lagged behind dozens of other countries that have vaccinated more people per capita.

Johnson & Johnson safe and effective: Health Canada

In approving the Johnson & Johnson vaccine, Health Canada’s chief medical adviser said a review of data from a clinical trial involving more than 44,000 participants found the shot is safe and effective.

“As with all COVID-19 vaccines, Health Canada authorized the Janssen one after an independent and thorough scientific review for safety, efficacy and quality,” said Dr. Supriya Sharma.

“After assessing all the data, we concluded there was strong evidence that showed the benefits of this vaccine outweigh the potential risks.”

Health Canada concluded the vaccine has an efficacy rate of 66.9 per cent in preventing moderate to severe COVID-19 illness, and has authorized it for use for adults aged 18 and older.

While the vaccine is less effective than previously approved vaccines from Pfizer-BioNTech and Moderna — both of which had efficacy rates of 90 per cent and above — Sharma said the shot offers strong protection against the threats that matter most: serious illness, hospitalizations and death.

“The efficacy rate does not mean that following vaccination with a vaccine with 66 per cent efficacy, that you will have a 34 per cent chance of contracting COVID-19,” said Sharma.

“While each of the vaccines Health Canada has authorized has different efficacy numbers, the reality is that you will have a greatly reduced chance of getting COVID-19 with any of the … vaccines that have been authorized.”

Sharma said the shot remained effective against the coronavirus variants first identified in South Africa and Brazil, as well as the dominant strains circulating in the U.S. and Canada.

One-shot vaccine is easy to store

Johnson & Johnson’s vaccine is widely seen as one of the easiest to distribute because it requires only one dose and can be stored for long periods of time at regular refrigerator temperatures of 2 C to 8 C.

It’s an adenovirus viral vector vaccine, which uses viral material — genetically engineered to keep it from replicating — to provoke an immune response.

Canada has ordered 10 million doses from Johnson & Johnson, with options for up to 28 million more.

Trudeau said he spoke this morning to the president of Janssen Canada, Jorge Bartolome. He said Bartolome assured him the company is working to set up its global supply chains and that it will meet its delivery commitments.

Procurement Minister Anita Anand said that the Janssen doses aren’t expected to begin arriving until April, although the full order of 10 million should be delivered by September.

Sharma said Health Canada has provided authorizations for manufacturing at two facilities — one in the U.S. and one in Europe.

Regulatory approval in this country follows the U.S. Food and Drug Administration’s approval last Saturday.

Production problems slowed initial deliveries in the U.S. The United States was supposed to receive 10 million doses as soon as the vaccine was approved, but only four million doses were shipped out March 1.

The U.S. expects to get another 16 million doses by the end of March and 100 million total by the end of June.

Canada has worked with the European Medicines Agency on all its COVID-19 vaccine reviews to date. The agency is expected to make a decision mid-month.

CBC

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