The kissing disease, also known as mononucleosis, glandular fever, or the mono virus, is a highly contagious viral infection that is spread through saliva. Common symptoms of the kissing disease include sore throat, fever, fatigue, swollen glands, and body aches. It is most common in teenagers and young adults. To prevent the spread of the kissing disease, it is important to avoid sharing utensils, food, and drinks with an infected person. Other synonyms for the kissing disease include the "kissing bug" and "the Epstein-Barr virus." Although the kissing disease is not typically a serious condition, it is important to seek medical attention if symptoms persist or worsen.