There are occasional national or regional outbreaks of aseptic meningitis, such as the echovirus 30 outbreaks in the United States between 1989 and 1992. However, there is significant yearly variation, and no long-term trends have been identified. No vaccine is currently available for the non-polio enteroviruses. General cleanliness and frequent handwashing are probably effective in reducing the spread of these viruses. State health department laboratories report to CDC the enteroviruses they identify by testing specimens from patients.
Aseptic meningitis is no longer a nationally notifiable disease.
Other forms of meningitis and poliomyelitis are notifiable, which means that any doctor or laboratory that diagnoses a case must report it to the public health department. An adenovirus is another common human virus, generally associated with upper respiratory symptoms in humans. Current data suggest that adenoviruses that are in the group C, adenoviruses type 2 and possibly type 5, are associated with viral inflammatory heart disease in children and adults. Natural infections are natural immunizations, whether or not you become noticeably ill from the infection. The advantage of that previous exposure is that even though you can get infected again, you will not get disease from the virus.