They're most contagious from right before symptoms start until they go away. But they can stay contagious for months after their symptoms have cleared up. Then, the virus stays dormant inactive in the body for the rest of their life.
That means it can sometimes show up in their spit and get passed on to someone else. The spleen is a small organ usually about the size of your fist. But a number of conditions, including liver disease and some cancers, can cause your spleen to become enlarged. Mononucleosis may cause enlargement of the spleen.
In extreme cases, your spleen may rupture, causing sharp, sudden pain in the left side of your upper abdomen. If such pain occurs, seek medical attention immediately — you may need surgery. The Epstein-Barr virus can cause much more serious illness in people who have impaired immune systems.
Mononucleosis is spread through saliva. If you're infected, you can help prevent spreading the virus to others by not kissing them and by not sharing food, dishes, glasses and utensils until several days after your fever has improved — and even longer, if possible. And remember to wash your hands regularly to prevent spread of the virus. The Epstein-Barr virus may persist in your saliva for months after the infection. No vaccine exists to prevent mononucleosis.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. Additionally, regular and thorough hand washing is one of the best ways to stop viruses from spreading. Covering the mouth when coughing and sneezing and throwing away tissues straight after use can also help reduce the spread of viruses. After becoming infected with EBV, the virus can be inactive in the body.
It does not cause any symptoms while it is inactive. Once a person has had mono, it is unlikely that they will develop mono again. For severe cases of mono, a doctor may prescribe further treatment. For example, they may use corticosteroids to reduce swelling in the throat or tonsils. People can return to school, college, or work once they are feeling better, and their doctor approves. Some people may still feel tired for several weeks or months after other symptoms go away, which may affect their work.
Mono can cause an enlarged spleen. People who experience an enlarged spleen from mono should avoid contact sports or heavy lifting.
This care will help to prevent the spleen from rupturing. It is best to see a doctor for any signs of mono. Doctors will usually diagnose mono by assessing symptoms and looking at medical history. They might also require some blood tests. Mono causes symptoms such as fatigue, sore throat, and body aches.
Most people will recover from these symptoms within a few weeks. But the virus is still contagious for several months after symptoms go. People with mono can prevent the virus from spreading by avoiding kissing or the sharing objects that touch the mouth, such as a toothbrush.
Food Poisoning. Acute Bronchitis. Eustachian Tube Dysfunction. Bursitis of the Hip. Abnormal Uterine Bleeding. High Blood Pressure. Home Diseases and Conditions Mononucleosis Mono. Table of Contents. What is mononucleosis? Symptoms of mono Some of the symptoms of mono are similar to those of a cold or flu. They include: Fatigue. Sore throat. Swollen glands in your neck and armpits. Swollen spleen or liver. Loss of appetite. What causes mono? How is mono diagnosed? He or she will do a physical exam and look for: Swollen lymph nodes in your neck.
Swollen tonsils. Swollen liver or spleen. Can mono be prevented or avoided? Here are some steps you can take to feel better: Rest. Sleep helps your body fight infection. Drink plenty of fluids.
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