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School Health Reference Guide


The Region of Peel School Health Reference Guide is a supplementary resource to relevant Peel and Dufferin-Peel school board policies. Refer to school board policy first if you have questions or concerns.

Childhood Diseases and Illnesses

Mononucleosis, Infectious (Epstein-Barr Virus)
  • Infectious mononucleosis, also called “mono,” is a contagious disease. Epstein-Barr virus (EBV) is the most common cause of infectious mononucleosis, but other viruses can also cause this disease.
  • It is common among teenagers and young adults, especially college students.
  • Symptoms of infectious mononucleosis usually appear 4 to 6 weeks after you get infected with EBV.
  • Symptoms include fever, sore throat, swollen lymph glands, abdominal discomfort, tonsillitis, general body weakness and discomfort, loss of appetite, may have enlarged liver and spleen, rarely jaundice and rash.
  • Most people get better in two to four weeks; however, some people may feel fatigued for several more weeks. Occasionally, the symptoms of infectious mononucleosis can last for six months or longer.
  • Typically, these viruses spread most commonly through bodily fluids, especially saliva. However, these viruses can also spread through blood and semen during sexual contact, blood transfusions, and organ transplantations.
  • There is no vaccine to protect against infectious mononucleosis. You can help protect yourself by not kissing or sharing drinks, food, or personal items, like toothbrushes, with people who have infectious mononucleosis.
Instructions for Schools
  • Does not need to be reported to Peel Public Health.
  • No exclusion needed.
  • Student may return to school when well enough to participate.
  • Avoid activities that would result in sharing saliva.
  • Encourage thorough hand washing (PDF) and respiratory etiquette (PDF).
  • If spleen is enlarged, student should not participate in contact sports.
  • Most commonly recognized in high school and post-secondary students.

Peel Public Health is not responsible for the content of the linked websites.

For more information on communicable disease resources and programs,
call Peel Public Health at 905-799-7700.(In Caledon, call 905-584-2216.)


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Revised: Tuesday January 12 2016