http://www.ncf-net.org/library/PIV5HostChallenge-0606.htm

we have learned that Parainfluenza Virus-5 plays what the Foundation sees as a predominant and primary role in
the development of CFS/CFIDS/ME.

http://www.ncf-net.org/library/PressRelease0606.htm

Potential animal (zoonotic) virus identified in patients with Chronic Fatigue Syndrome,Multiple Sclerosis and Epilepsy