Viruses are abundant in the world and cause many other infections ranging from mild to life-threatening.
- Epstein-Barr virus (EBV) is a type of herpes virus that’s associated with fever, fatigue, swollen lymph nodes, and an enlarged spleen. EBV is a very common virus that causes mononucleosis (“mono”). More than 90% of adults have been infected with this “kissing disease” that is spread primarily through saliva.
- West Nile virus (WNV) is a virus that’s most commonly transmitted by infected mosquitos. Most people (70% to 80%) with WNV don’t have any symptoms while others develop a fever, headache, and other symptoms. Less than 1% of people with WNV develop inflammation of the brain (encephalitis) or inflammation of the tissue surrounding the brain and spinal cord (meningitis).
- Viral meningitis is an inflammation of the lining of the brain and spinal cord that causes headache, fever, stiff neck, and other symptoms. Many viruses can cause viral meningitis, but a group of viruses called enteroviruses are most often to blame.