Are older adults more at risk from illness associated with West Nile virus?
Older people are at no greater risk of being bitten by a mosquito infected with the West Nile virus than any other person. The elderly and people with weakened immune systems have the highest risk of developing severe illness because as we age, our bodies have a harder time fighting off disease. However, people of all ages can be infected with West Nile virus and some will have severe illness with lasting effects.