Pfizer Inc. funded presentations to Canadian health professionals earlier this year that claimed rival COVID-19 vaccines could cause cancer and were inappropriate for immunocompromised people — claims that experts say were not true.

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https://nationalpost.com/news/canada/pfizer-funded-talks-contained-untrue-negative-information-about-rival-covid-vaccines-experts-say/wcm/06b60688-18e4-4334-adb0-477b00b691c2/amp/