Can You Get Mono Twice?
3. Cytomegalovirus
While most cases of mono are caused by the Epstein-Barr virus, some instances are also caused by the human cytomegalovirus. Both viruses are a variety of herpes. The cytomegalovirus is spread by the exchange of bodily fluids, just like the Epstein-Barr virus is. In most cases, the patient will not experience symptoms and will be unaware that they have the virus.
It is even estimated that around 90% of the population has been infected with the human cytomegalovirus. In the rare instances that symptoms do arise, however, it can be very dangerous for the patient, especially for people that have weak immune systems.
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