With viral infections they are just about the same as bacterial infections with a high temperature, sweats, chilling, feeling of being tired all the time, sleeping a lot, nausea, vomiting, unable to eat anything are just a few I'm sure.
3 year old with a wet cough mostly at night . After 3 days of this cough severe pain in one knee . Blood test show no mono but viral. Is the pain in his knee related to the virus?