How Long Is Mono Contagious?

Mono is a complicated disease that can be spread through the body. Many people don’t know how long it takes to get it. Mono is a life-long virus that the virus can transmit. However, this doesn’t mean you are always contagious. The virus can still be present from time to time and could infect another person.

Here’s how it works.

Mono (or mononucleosis) is usually caused by infection with the Epstein-Barr virus.

Mono can spread from the moment they are infected to others. They may not be aware that they have the virus. Mono symptoms, such as fatigue, fever, muscle pains, headaches, and sore throat, can take a while to manifest. It usually takes about 1-2 months. This is the Incubation Period.

It is possible to have the virus in a person without ever experiencing mono symptoms. Although they may not know they are infected, they can transmit the virus to others. EBV infects almost all people before they reach adulthood.

While they are experiencing symptoms, people can be contagious. These symptoms can last for up to two weeks. Although health experts don’t know how long mono patients can remain contagious once symptoms have subsided, they can spread the disease for several months. The virus remains inactive (or does not exist) for the rest of the person’s life.

Sometimes, the dormant virus can “wake up” to find its way into a person’s saliva (spit). Although the person may not feel sick or have mono symptoms, they can spread it to others. There is a small chance that someone who has had mono before can spread it to others, even if they feel fine.

It’s difficult to stop mono from spreading. EBV is so sneaky that infections are quite common. Doctors recommend that everyone wash their hands frequently and thoroughly. This is the best way to prevent germs from spreading.