Mental health professionals to assist University of Guelph campus security officers during student calls

The University of Guelph in Guelph, Ontario is shown on Friday March 24, 2017. THE CANADIAN PRESS/Hannah Yoon The University of Guelph in Guelph, Ontario is shown on Friday March 24, 2017. THE CANADIAN PRESS/Hannah Yoon

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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.

Registered nurse Alix Zacharski, left, receives a Pfizer COVID-19 booster shot from Douglas Houghton, right, at Jackson Memorial Hospital Tuesday, Oct. 5, 2021, in Miami. (AP Photo/Lynne Sladky)