Mononucelosis, often referred to as “mono” or “the kissing disease,” is a viral infection that spreads through saliva and close contact. It’s most commonly caused by the Epstein-Barr virus (EBV) and it can lead to extreme fatigue, sore throat, and swollen lymph nodes. But how long after exposure do symptoms actually begin? Understanding the timeline of mono symptoms can help you recognize the infection early and seek appropriate care. For a same-day mono diagnosis ...