The Washington Post (5/1, Wosen) reported that as the pandemic continues, with older people among the most vulnerable, scientists are working to understand how the immune system changes as people age and what can be done to help older people with weakened immune systems.
For example, previous studies have shown that vaccines tend to be more effective in children than the elderly, so even if a coronavirus vaccine is developed, it might be less helpful for the elderly, who need it most.