How Long Is Mononucleosis (Mono) Contagious

How Long Is Mono Contagious?

The duration of mono varies from person to person. Some people may get sick within hours while others might not even feel it at all. You have probably heard of the term “the incubation period” which means how long it takes for someone to become infected with a virus or bacteria before they show any symptoms. For example, if you were bitten by a mosquito carrying the Zika virus, your body would start showing symptoms within 2 weeks. However, there are other factors that affect the length of time it takes for someone to contract mono.

In general, the longer you have been exposed to a virus or bacteria, the higher chance you will catch mono. That’s why it is recommended that anyone who has had contact with these viruses or bacteria stays home from school or work until their symptoms subside completely. If you are still feeling ill after 7 days, then it is best to seek medical attention.

Another factor that affects the duration of mono is the type of virus or bacteria. Some types of viruses or bacteria take much longer than others to develop into full blown infections. For instance, some strains of flu can cause severe illness within a few days whereas other strains may require up to two months before symptoms appear.

In the case of mono, the Epstein-Barr virus can cause a person to become otherwise known as “mono” after an average of 2-4 weeks. This period is known as the prodome and is used to describe the patient before they have shown any symptoms. For example, if you were diagnosed with a sore throat, this period would be used to describe the time before you showed any symptoms.

Once you become infected with the Epstein-Barr virus, it is very likely that you will experience one or more symptoms within four weeks. After this period of time, you can be contagious for the next few weeks or months. If you start to show symptoms within the first four weeks, this is known as an “acute infection”. Acute infections are usually brought to the attention of the medical community due to the fact that these patients have severe symptoms such as an enlarged spleen or liver.

If you do not show any symptoms after the first four weeks, then this is known as a “chronic infection”. In most cases, someone with a chronic infection is considered healthy as they may not experience any symptoms at all. It is only when their immune system becomes stressed that symptoms begin to appear.

The most important thing to remember about mono is that it is extremely contagious. While you may not have any symptoms, a simple cough or sneeze could transfer the virus to someone else. In fact, as many as 90% of adults will experience a “stomach bug” within one week of being exposed to the virus.

How long are mono symptoms contagious for?

Sources & references used in this article:

When to resume sports after infectious mononucleosis: how soon is safe? by JD Haines Jr – Postgraduate medicine, 1987 – Taylor & Francis

Serologic diagnosis of infectious mononucleosis by I Davidsohn – Journal of the American Medical Association, 1937 –

Focal encephalomyelitis in infectious mononucleosis: a report with pathological description by M AMBLER, J STOLL, A TZAMALOUKAS… – Annals of Internal …, 1971 –

The incubation period of infectious mononucleosis by RJ Hoagland – American Journal of Public Health and …, 1964 –