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Breakthrough COVID-19 infections more severe, likely in immunocompromised individuals: Pfizer study

By Tom Yun, CTVNews.ca Writer Click here for updates on this story     TORONTO, Ontario (CTV Network) — A study involving more than a million fully vaccinated people found that COVID-19 breakthrough infections were more common among immunocompromised individuals and were far more likely to lead to hospitalization or death. Researchers from Pfizer published their findings

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