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First doses of vaccine expected for all Albertans by early summer

"This change will significantly increase how quickly we can offer Albertans the protection of their first dose."
vaccine

Alberta will be delaying second doses of the COVID-19 vaccine for up to four months, instead of the current 42 days, which is expected to allow all Albertans over the age of 18 to get their first dose by early summer.

On Wednesday, Alberta decided to follow recommendation issued earlier in the day by the National Advisory Committee on Immunizations (NACI), which calls for a four-month window between the first and second dose of the COVID-19 vaccine.

New research from Quebec, British Columbia, Israel and the U.K. shows the Moderna and Pfizer vaccines were providing 70 to 80 per cent effectiveness against the virus two months after the first dose. Once a second dose is given, long-term protection against the virus will be provided. 

In delaying the second dose, Alberta Chief Medical Officer of Health Dr. Deena Hinshaw said it will allow for more Albertans to receive that first dose and be protected against the virus more quickly. Nationally, it is estimated all Canadians over the age of 18 will be able to get the first shot by early summer under this new distribution plan. 

“We’ve seen research from other jurisdictions that indicates one dose of the Moderna or Pfizer vaccine offers a huge boost in immunity, with Canadian data indicating about 80 per cent protection after the first dose," Hinsahw said. 

"This change will significantly increase how quickly we can offer Albertans the protection of their first dose. The more people that we can offer this protection to in the coming weeks and months, the more effective we will be at stopping spread," Hinshaw said. 

Hinshaw said the evidence on COVID-19 is constantly evolving and it is critical that the province uses the most up-to-date information to refine the provincial plan for combating the virus. 

The top doctor said the second dose is still important to help provide long-term protection.

Starting March 10, anyone who books their first dose will have their second dose timeline extended from the original 42-day window up to the 16-week window. Second dose appointments will no longer be booked during the first dose, and Albertans will now be sent a reminder to book their second dose.

Right now, three vaccines have been approved for distribution in Canada, with the AstraZeneca-Oxford vaccine now joining the Pfizer and Moderna products. 

The province is slated to get some of the AstraZeneca vaccine next week, though it is not known exactly how much.

"We are still working to confirm exactly how many doses we will receive, and when they will arrive. We hope to update you soon on how these vaccines will be distributed here in Alberta," Hinshaw said.

The province will not be distributing the AstraZeneca vaccine to anyone over the age of 65 because it is not as effective on that age cohort. 

"What's clear is that all three of these vaccines reduce the risk of getting COVID-19 and prevent serious outcomes, including hospitalization and death," Hinshaw said.

About 255,000 doses of vaccine have been administered in the province, and more than 89,000 people have now been fully immunized with two doses, she said.

"This is great news for our most vulnerable Albertans and those who care for them."

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Jennifer Henderson

About the Author: Jennifer Henderson

Jennifer Henderson is the editor of the St. Albert Gazette and has been with Great West Media since 2015
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