Study finds people with dementia twice as likely to get COVID-19 By Chris Williams A new study shows that people with dementia are at an increased risk of contracting COVID-19. A new study shows that people with dementia are at an increased risk of contracting COVID-19. The study, led by researchers at Case Western Reserve University, also pointed out that people with dementia had a greater chance of being hospitalized or dying from the virus. Researchers said people who suffer from dementia or Alzheimer’s disease have a damaged barrier between the blood and the brain, making them more susceptible to bacterial, viral and fungal infections. Researchers also said the diseases impair memory, making it difficult for sick patients to remember or comprehend COVID-19 safety protocols such as social distancing, mask-wearing and handwashing.