Watch: When disease impairs immunity, vaccines are hampered, too
Covid-19 vaccines are remarkably effective, and, at this point, they are the best tool we have against the pandemic. But for people who are immunocompromised, like cancer patients, the regular course of shots may offer little to no protection.
Former Secretary of State Colin Powell died at 84 last week from complications of Covid, despite being fully vaccinated. Powell also had multiple myeloma, a cancer that affects plasma cells. While many conditions can make people more vulnerable to breakthrough illness, multiple myeloma is among the riskiest.
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