Mosquito-borne viruses also account for a few cases each year. In many cases, the specific virus cannot be identified. Because a number of different viruses are capable of causing viral meningitis, the manner in which the virus is spread depends upon the type of virus involved. The symptoms may include fever, headache, stiff neck and fatigue. Rash, sore throat and intestinal symptoms may also occur.
Symptoms generally appear within one week of exposure.
Some of the enteroviruses that cause viral meningitis are contagious while others, such as mosquito-borne viruses, cannot be spread from person to person. Fortunately, most people exposed to these viruses experience mild or no symptoms. Most people are exposed to these viruses at some time in their lives, but few actually develop meningitis. Strict isolation is not necessary. Since most cases are due to enteroviruses that may be passed in the stool, people diagnosed with viral meningitis should be instructed to thoroughly wash their hands after using the toilet.