Micorscope is used by researcher who use her hands holding and adjusting while science research in laboratory A new research led by Cornell University says it finds “little to no evidence” of a link between a person’s normal blood levels of vitamin D and risk of getting COVID-19. In the most comprehensive study of its kind to date, the research did not also find the severity of an infection. Multiple studies had suggested an association between vitamin D and COVID-19 risk, raising hopes that vitamin D supplements might help to prevent or minimise infections – speculation that has received widespread media attention and boosted consumer interest.