While the number of COVID-19 cases is steadily increasing in individuals who are fully vaccinated against the virus, experts say the data shows that vaccines continue to work in reducing transmission and preventing severe infection.
that there have been 48,555 coronavirus cases in fully vaccinated individuals and 47,230 infections in those who are partially vaccinated as of Oct. 9. This makes up roughly 12 per cent of Canada's total COVID-19 cases since the start of the pandemic.are still considerably higher among unvaccinated people than the fully vaccinated population.
Kalina added that many breakthrough cases are asymptomatic and would otherwise go unnoticed, but were likely reported in provincial case counts because the individual works in a setting that requires daily COVID-19 testing, or they were admitted to a hospital for another reason, such as a broke bone, and were revealed to be infected.
While infections in vaccinated patients cleared quicker than in those who are unvaccinated, the study noted that both infections resulted in a "similar peak viral load," which is when people are considered to be at their most infectious. Despite the term "breakthrough" making it seem like the vaccines failed, Kalina stressed they do work.
"We've known from the very beginning, we've known even before Delta variant emerged, that people can get breakthrough infections," Bogoch said in a telephone interview Friday. "So it should come to no one's surprise that people can still get COVID-19 if they're vaccinated."
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