What are the predisposing factors of mononucleosis?

Predisposing factors for mononucleosis, commonly caused by the Epstein-Barr virus (EBV), include age, as it most frequently affects adolescents and young adults. Close contact with infected individuals, such as through kissing or sharing drinks, increases the risk of transmission. Additionally, a weakened immune system may heighten susceptibility to the virus. Lifestyle factors, such as high-stress levels and fatigue, can also contribute to the likelihood of developing the illness.