Canada’s herd immunity goal could rise to 90 per cent amid COVID-19 variant surge, official says

Health officials warned last week against loosening public health measures as new COVID-19 variants spread across Canada. Now, one official predicts herd immunity targets for vaccinations will also creep to higher levels.

Dr. Supriya Sharma, chief medical adviser with Health Canada, pictured in December 2020, says 'a lot of people' are refining estimates of herd immunity targets.The Hill Times photograph by Andrew Meade

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BY PALAK MANGAT

February 22, 2021

Health officials are tweaking their estimates of herd immunity targets in Canada to up to 90 per cent in the face of emerging COVID-19 variants, members of the House Health Committee heard Monday. Typically, herd immunity to a vir...

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