Herpes Virus - Transmission & Transmittability
The herpes virus is quite fragile. HSV does not survive outside the body for more than about 10 seconds, and although it can survive for slightly longer in warm, damp conditions, it dies very quickly once exposed to the air. Transmission through inanimate objects such as toilet seats is unlikely. Precautions include not sharing towels, underwear, or other objects that come into contact with genital lesions.
So far the sites are saying it does not transmit from toilet seats but this site says it can from warm, damp areas......