How Long Is Mono Contagious?

How long is mono contagious? Mononucleosis (mono) is known as the “kissing disease”, because it's transmitted by saliva. This is a viral infection that causes swollen lymph nodes and a sore throat, and it's common amongst adolescents and young adults and is often spread at school.
  1. Mono is spread person to person. People can spread this disease through kissing, sharing food and drink, or sneezing and coughing. If you suspect someone of having mono, steer clear. 
  2. You are contagious a month after getting it. Symptoms usually develop four to six weeks after the infection and take several days to actually surface. Symptoms associated with this infection are fever, poor appetite, weight loss, headache, and fatigue. 
  3. Wash your hands and watch your lips. The way to prevent mononucleosis is to limit the sources where saliva can be transferred. Washing your hands is the number one preventative measure. 
  4. If you think you have mono see your doctor. Seek medical attention if you have symptoms of mononucleosis, because if it goes untreated, cancer cells can develop. The doctor will perform a blood test to look for antibodies against the Epstein-Barr virus (EBV) to confirm the diagnosis. There are no treatments to relieve mononucleosis, but simple measures will help. Drink plenty of cool fluids, and use painkillers such as acetaminophen to temporarily help with any pain you may be feeling. You can also take Tylenol to reduce your fever. 

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