Mosquito-borne viruses also cause some cases each year. In many cases, a specific virus cannot be identified. Viral meningitis is found worldwide. Cases that occur in summer and fall are usually caused by mosquito-borne viruses. Those occurring in winter are likely due to other diseases.
Symptoms are fever, headache, stiff neck, and tiredness.
Rash, sore throat, and vomiting can also occur. Symptoms generally appear within 1 week of exposure. Illness usually lasts less than 10 days, and people usually recover completely without complications. Though anyone can get viral meningitis, but it occurs most often in children and young adults. Viral meningitis is relatively common.