 More than half the country is experiencing a summer COVID-19 wave, and public health officials say those at higher risk of severe disease, including older people, should consider taking extra precautions. NPR's Maria Godoy has more. As you age, your immune system tends to get weaker. In general, people over 65 are considered at higher risk from COVID. Though Dr. Preeti Malani of the University of Michigan notes that risk can vary depending on underlying health conditions like heart disease or diabetes.