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Mononucleosis

Mononucleosis, often referred to as mono, is an infectious illness typically caused by the Epstein-Barr virus. It is characterized by symptoms such as fatigue, fever, and sore throat. The condition is commonly seen among adolescents and young adults, often spreading through saliva. Awareness of symptoms and lifestyle adjustments can help in managing this illness.

Infectious Diseases
  • What exactly is mononucleosis (mono)?
    MedlinePlusMay 2026

    Mononucleosis (mono) is a disease caused by viruses, most commonly the Epstein-Barr virus (EBV). It's contagious and spreads from person to person, and is especially common in teenagers and young adults.

  • How does mono spread from one person to another?
    MedlinePlusMay 2026

    Mono spreads through body fluids, especially saliva (spit), so you can get it by kissing someone who has it. You can also catch it by sharing food, drinks, utensils, or lip balm with someone who has mono.

  • Why do teenagers and young adults get mono more often?
    MedlinePlusMay 2026

    Teenagers and young adults who get infected with EBV are more likely to develop the symptoms of mono, while children who get infected often don't show symptoms or have symptoms that look like other common illnesses.

  • Can I catch mono if I don’t kiss someone who has it?
    MedlinePlusMay 2026

    Yes, you can catch mono without kissing—you can get it by sharing food, drinks, forks, spoons, or lip balm with someone who has mono.

  • Is there a way to prevent getting mono?
    MedlinePlusMay 2026

    There is no vaccine to prevent mono, but you can reduce your risk by avoiding sharing saliva with others through kissing, sharing drinks, or sharing eating utensils with people who have mono.