If I had mononucleosis 5 years ago, can I still give it to someone? I kissed this guy 4 days ago, and he is saying that I gave him mono already! Is this possible?
You might still be contagious, but you didn't give your guy mono. Here's why:
Like other infections, mono has an incubation period. That means it takes time for someone to start feeling ill after being infected. The incubation period for things like colds and flu is a few days. But for mono, the incubation period is 4 to 7 weeks. If you kissed a guy 4 days ago, any symptoms that he may have today are from something else, like a cold. It's just too soon for mono to show up.
So what does it mean when we say you might still be contagious, even after 5 years? The virus that causes mono is the Epstein-Barr virus (EBV for short). EBV is tricky. Experts think people with mono are most contagious for the first 18 months, but EBV stays in the body for life. The virus can show up in a person's saliva from time to time, even if it doesn't make that person feel sick with mono again. In theory, there is a very small chance that you can transmit EBV to someone else at any given point in time, even if you feel OK. Since you don't know when the virus shows up, there's not much you can do — though it can help to wash your hands regularly and avoid sharing eating or drinking utensils.
Because EBV is so sneaky, infections are common: About 95% of people have been infected with the virus by the time they are adults. Viruses like EBV are one reason why doctors are so big on hand washing. It's the best way to keep germs at bay.
Reviewed by: Elana Pearl Ben Joseph, MD
Date reviewed: February 2013
*Names have been changed to protect user privacy.
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|Centers for Disease Control and Prevention (CDC) The mission of the CDC is to promote health and quality of life by preventing and controlling disease, injury, and disability. Call: (800) CDC-INFO|
|Mononucleosis It's sometimes called "the kissing disease," but kissing is just one of the ways that someone can catch mono.|
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|How Long Is Mono Contagious? Once someone gets mono, the virus stays in that person's body for life. This doesn't mean that if you've had mono you are always contagious, but it does mean the virus may surface from time to time and possibly infect someone else. Here are the facts on how mono works.|
|Why Should I Care About Germs? Germs are tiny organisms that can cause disease - and they're so small that they can creep into your system without you noticing. Find out how to protect yourself.|
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