How long will i be out of work for mono?

It depends: Mono is caused by the epstein-barr virus. It usually lasts a few weeks. The more rest you get the faster you will feel better. Eat a healthy diet with lots of water and juices. Follow the recommendations of your doctor. You can go back to work when you feel better. Sometimes it is better to get back slowly and work shorter hours or from home if possible. Listen to yur body.

By 2-3 wks: For most teens or adults this would gradually improve by 2-3 weeks which is the general contageous period. A subset of 1/4 may have persisting problems (tired,lethargic) for 2-3 mo. There is a myth about a "chronic" mono (yrs) that has been refuted by the CDC.