Infectious Mononucleosis in Children

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Infectious mononucleosis, more commonly known as "mono", is a viral illness characterized by flu-like symptoms, fatigue and swollen lymph glands. It's long been nicknamed the "kissing disease" as it's easily transmitted through saliva.

  • Mono is contagious and difficult to prevent.
  • Symptoms last about one to two months.
  • Once you have had mono, the virus remains inactive in the throat and blood cells for the rest of your life.
  • Almost 95 percent of adults have been exposed to the virus.
  • Antibiotics don't work; the best treatment is rest and plenty of fluids.

How Boston Children's Hospital approaches mononucleosis

Children's has created two Web sites directly aimed at young women and young men to discuss conditions that they may be exposed to, including mono. The mission of these Web sites ( and is to help teens, their parents, teachers and health care providers improve their understanding of normal health and development, as well as specific diseases and conditions.

We are grateful to have been ranked #1 on U.S. News & World Report's list of the best children's hospitals in the nation for the third year in a row, an honor we could not have achieved without the patients and families who inspire us to do our very best for them. Thanks to you, Boston Children's is a place where we can write the greatest children's stories ever told.”
- Sandra L. Fenwick, President and CEO

Boston Children's Hospital 300 Longwood Avenue, Boston, MA 02115 617-355-6000 | 800-355-7944