Vild lax, forell och ål har befunnits bära viruset som nu tycks vara endemisk till och med i en större marin miljö. ###>But I must say that despite the scare-mongering of the Greens, it has to be emphasised that ISA cannot under any circumstances be transmitted to humans, and I must repeat what Mr Hudghton said, that the virus cannot survive above 25o - which is human body temperature - it is a virus of a cold-water species.