CIDRAP: Weak immune systems tied to more COVID-19 breakthrough infections

CIDRAP: Weak immune systems tied to more COVID-19 breakthrough infections. “While COVID-19 breakthrough infections—cases after vaccination—are rare, fully vaccinated people with compromised immune systems have them three times more often than those with strong immune systems and have more severe illnesses, according to a real-world US study involving nearly 1.3 million people.”

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