Banff Sunshine Village ski resort mandates staff vaccinations, requires proof from guests

Banff Sunshine Village ski resort in Banff National Park. (file) Banff Sunshine Village ski resort in Banff National Park. (file)

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Why COVID-19 boosters weren't tweaked to better match variants

More COVID-19 booster shots may be on the way -- but when it's your turn, you'll get an extra dose of the original vaccine, not one updated to better match the extra-contagious delta variant. And that has some experts wondering if the booster campaign is a bit of a missed opportunity to target delta and its likely descendants.