Canada has taken an important step in immunization. There is still work to be done but reasons to feel good about what has been accomplished – .

Canada has taken an important step in immunization. There is still work to be done but reasons to feel good about what has been accomplished – .

Seventy-five percent of the Canadian population has now received at least one dose of a COVID-19 vaccine.

This means that as of September 16, about 28.5 million people in this country had received a vaccine, nine months after the largest mass immunization program in Canadian history began last December.

Prime Minister Justin Trudeau promised earlier this year that any Canadian who wants a vaccine will be able to get one by the end of September.

The Star’s vaccine tracking system conservatively assumes that 75 percent of the Canadian population will receive a dose according to the target; this takes into account the fact that children are not currently approved to receive the vaccine and that some adults will not be vaccinated due to hesitation or medical reasons.

“When you get 75% of your population vaccinated, even though we now have a more transmissible Delta variant, it’s still fair to recognize that the vast majority of people have done the right thing,” said Dr Isaac Bogoch, specialist in infectious diseases. at the University Health Network and former member of the now disbanded Ontario Vaccine Distribution Working Group.

“We also cannot ignore how important this is in helping to prevent the spread of COVID-19 in the community. It helps at the individual level, but it also helps significantly at the population level. “

To date, 69% of the country’s population has received two doses of the vaccine. A total of 54,771,266 doses were administered.

In Ontario, about 85 percent of the province’s eligible population (12 years and older) received at least one dose, while almost 79 percent received two doses.

While the news that 75% of the national population has received at least one dose is undoubtedly good, Bogoch notes that more people need to be vaccinated to gain herd immunity due to the arrival of the Delta variant, more transmissible.

Dr Anthony Fauci, director of the US National Institute of Allergy and Infectious Diseases, said it was now not clear what level of vaccination would be needed to achieve herd immunity in that country. But Dr Ricardo Franco of the Infectious Diseases Society of America told an August briefing that the Delta variant had pushed herd immunity threshold estimates “well above 80%, possibly approaching 90. % ”.

“The problem here is that the Delta variant is twice as transmissible as the original virus and this pushes the herd immunity thresholds of the general population much higher,” Franco said.

Bogoch agrees.

“The reason the goalposts change is because when you have a more heritable variant, which we do with the Delta variant, the herd immunity calculations change,” he said. . “You definitely need to vaccinate a higher proportion of the population in this situation. “


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