Why Canada avoided a severe winter COVID wave
Hybrid immunity, better treatment access, less severe infections helped control COVID
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Hybrid immunity, better treatment access, less severe infections helped control COVID
Canada has managed to avoid a severe COVID-19 wave this winter despite a total lack of public health restrictions, a busy indoor holiday season and a rapidly mutating virus that is still very much circulating in the population.
Parent–provider conversations can clarify how and why parents make vaccination decisions regarding their children and can lead to tailored recommendations.
All estimates of protection waned within months against reinfection but remained high and sustained for hospital admission or severe disease. Individuals with hybrid immunity had the highest magnitude and durability of protection, and as a result might be able to extend the period before booster vaccinations are needed compared to individuals who have never been infected.
The Omicron variant was last year's unpleasant holiday surprise to scientists studying COVID-19. More than a year later, a loosely knit group of "disease detectives" across Canada continues to keep watch for key mutations.