Cognitively normal people in the United States aged 65 years and older who were infected with coronavirus disease 2019 (COVID-19) had a 59% to 89% higher risk, depending on their age group, of being diagnosed with Alzheimer’s disease within a year, when compared to a control group. Across all older adult age cohorts, the higher risk of Alzheimer’s disease diagnosis was 69% higher for those who had contracted COVID-19 compared to those who did not have COVID-19.
Among those age 65 to 74, the risk was 59% higher. Among those age 75 to 84, the . . .