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Articles on Immunity passports

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B.C. Jobs Minister Ravi Kahlon has his COVID-19 vaccine QR code scanned in September, 2021. THE CANADIAN PRESS/Darryl Dyck

Pandemic vaccine passports in Canada: A brief history and potential future

Vaccine passports became one of the most divisive issues of the COVID-19 pandemic. These policies were affected not only by public opinion but by new variants and changing goals for herd immunity.
It’s not yet clear whether antibodies in the blood of patients who have been infected with SARS-CoV-2 indicate immunity. Above: blood specimens for COVID-19 antibody tests. (AP Photo/Mary Altaffer)

Can antibody tests tell us who is immune to COVID-19?

Immunity to COVID-19 may be complicated. Here are the promises and pitfalls of antibody tests.

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