Mononucleosis is a contagious disease. It is contagious most of the time. When people get infected by it then it lasts for 1-2 weeks. It may lasts for long time.

TAGS: 1. mononucleosis symptoms
2. is mono contagious
3. how long is epstein barr contagious
4. how long is meningitis contagious
5. how long is strep throat contagious