Can you spread mononucleosis during its incubation period?

Yes, mononucleosis, often caused by the Epstein-Barr virus (EBV), can potentially be spread during its incubation period, which typically lasts 4 to 6 weeks. Although individuals may not show symptoms, the virus can still be present in their saliva and can be transmitted through activities such as kissing or sharing drinks. Therefore, it is possible to unknowingly pass the virus to others before the symptoms appear.