True. If it is a bacterial infection that it can be treated with antibiotics but if it's a viral infection, you can't get rid of it. The best you can do is lessen the pain or heal the ulcers that may show up.
I am 80% sure it's True, but don't take my word for it
Childhood, Society, Media, and Beliefs.
The individuals most susceptible to heat illness would be young children, elders, and obese people.