Dismiss Modal

Types

Mononucleosis

Choose a preferred language

Mononucleosis, or “mono”, is called the kissing disease because it is spread through a virus in your saliva. You can get it from kissing someone who is infected, sharing a toothbrush, or drinking from someone else's glass. Mono is spread from person to person, but it is harder to catch than the common cold. For most people mono is not a dangerous disease.

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Related Articles
Read more →
Infectious Diseases
Mononucleosis

Mononucleosis (also called mono) is a contagious viral infection. It's usually spread by contact with saliva, often by kissing.

Read more →
Infectious Diseases
Infectious Mononucleosis (Mono) in Teens and Young Adults

Infectious mononucleosis is a contagious illness. It’s common in teens and young adults.

Read more →
Infectious Diseases
Mononucleosis (Mono)

Mono is best known for causing swollen glands and tiredness. But it can also cause other symptoms. Here's what you need to know.

Read more →
Infectious Diseases
Infectious Mononucleosis (Mono)

Infectious mononucleosis causes swollen lymph glands, fever, sore throat, and chronic fatigue.