COVID-19 mortality and vaccine efficacy in nursing homes: does vitamin B12 deficiency play a role?

Henry Olders, P.Eng, MD, FRCPC Affiliate Member, Dept of Psychiatry, McGill University, Montreal, Canada Abstract It is believed that nursing home residents experience more disease severity and higher mortality from COVID-19, compared to community-dwelling elderly with similar comorbidities. Among the possible explanations for this phenomenon is the difference in vitamin…

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