If you believe you have West Nile Virus, see your health care provider. He/she will do a clinical exam and will run blood tests or spinal fluid tap if necessary. If a case is suspected by your health care provider, he/she is required to report that information to the Health Department. The Health Department will then investigate every case, and will contact you if necessary. There are 78 diseases that health care providers are required to report to their county health department, and West Nile Virus is one of them.