Public Health
Survey


Help us improve our Health Website

Take 2-3 minutes to tell us what you are looking for today.

Your feedback will help us improve our site.

No thanks
Take the survey
Living > Public Health, Safety

Mononucleosis

What is it?

Infectious mononucleosis is an infection caused by the Epstein Bar virus. It is more commonly known as "mono" or "the kissing disease."

What are the symptoms?

Only half of those infected with the virus develop symptoms. Common symptoms include: fever, sore throat and swollen glands in the neck. The sore throat is worse during the first 5-7 days and settles over the next 7-10 days. It can take 3 weeks for the swollen glands to subside.

An enlarged spleen occurs in half of those persons infected with the virus. Some people may develop yellowing of the skin and eyes which is called jaundice.
Symptoms can last from one to several weeks. However, it can take months for a small number of individuals to regain their previous energy level.

In infants or young children, symptoms may be less noticeable. Teens and young adults are more likely to be diagnosed because symptoms tend to be more noticeable.

How soon do symptoms appear?

Symptoms of infectious mononucleosis usually begin 4-6 weeks after being exposed to the virus.

How does the virus spread?

The virus that causes infectious mononucleosis is mainly spread through contact with the saliva of infected persons. Kissing, sharing food or drinks and contact with hands or toys contaminated with infected saliva can spread the infection. Spread can also occur through blood transfusion, but symptoms are uncommon if spread this way.

How long is a person contagious?

It is unknown how long a person is contagious. Virus can be shed in saliva for many weeks and even on and off for several years after symptoms subside. These healthy adults are known as 'carriers'.

When can a person return to work/school/daycare?

There is no exclusion to attend daycare/school or work, however, the infection can cause a lack of energy and it may be difficult for some to carry out their normal routines. Some children may need to be off from school for several weeks, while others feel well enough to attend full time.

What is the treatment?

Antibiotics do not work for this illness since it is caused by a virus. However you can treat the fever and aches with acetaminophen. In addition, rest is needed for most people with this infection and activity should be increased only as tolerated.

How can mononucleosis be prevented?

  • Do not share food, drinks, or cigarettes
  • Hand hygiene can help to reduce the spread of infection to others

This information is intended to provide general health-related information about Infectious mononucleosis.  It is not intended to replace medical consultation by your physician and/or other health care professionals.

Source: Red Book 2006, 26th Edition, American Academy of Pediatrics.Control of Communicable Diseases Manual, 2008, 19th Edition,David L. Heymann.


Did you find what you were looking for today?