Do you have a strong immune system?

Are you getting enough vitamins to boost your immunity?
Vitamin D is necessary for the proper functioning of the immune system, which is the first line of defense against infection and disease. A deficiency of this nutrient may compromise the immune response.
British researchers recently found an association between low average levels of Vitamin D and high numbers of COVID-19 cases and mortality rates across 20 European countries. According to them, Vitamin D has been shown to protect against acute respiratory infections, and older adults, the group most deficient in Vitamin D, are also the ones most seriously affected by COVID-19.