Low grade fever, sore throat, feeling more tired than usual, and swollen lymph nodes. About half of people will develop an enlarged spleen (determined by a health care provider). Symptoms most often develop 4-6 weeks after exposure to the virus.
Spread by coming in contact with infected nose, mouth and throat secretions as well as contaminated items (such as shared water bottles). Someone can be contagious for a long time.
  • Practicing proper hand hygiene
  • Do not share items that go in the mouth
  • The student can return to school when feeling well. It is recommended they do not participate in contact sports for 6-8 weeks to reduce the risk of rupturing the spleen.
    Seek medical assistance if needed for symptom management.

    Communication Notice (recommended to be distributed if two or more cases are present)

    We have been advised of a suspected case(s) of mononucleosis in our classroom/school. While mononucleosis can be a nuisance, it is a common childhood illness, especially in teenagers. Exclusion from school is not required and students can return once they are feeling well.

    Parent/guardians are encouraged to watch their child for signs of mononucleosis which could include low grade fever, sore throat, fatigue and swollen glands. If you suspect your child may have mononucleosis, please contact a health care provider for treatment or 811 for advice.

    To find out more, check out this fact sheet on mononucleosis at: