Paisley - my clinic don't offer information on CMV status, but both Cryos and ESB will send you a list of CMV- donors (narrows it down to around 10 contactable donors!) if you email them to ask. This is because in Denmark they take a much more relaxed view on the CMV issue.
It would only be if the virus was actually active at the point the donor donated that it might cause a problem and that shouldn't be the case because of the health checks in place. Then I gather the sperm being frozen then washed removes or at least lessens the risk of infection.
In the end I decided not to worry about CMV. You can catch it from the saliva/snot etc. of someone who has it. The main carriers of active CMV virus are toddlers and young children! It seemed daft for me to go to great lengths (and more expense than using my clinic's donors) to have a CMV- donor when all of my friends have young children who I couldn't spend 9 months avoiding.
Obviously CMV is serious in pregnancy and that shouldn't be belittled, but I do find myself wondering why we worry about it when a normal couple starting TTC wouldn't even think to get the bloke tested.
I also wonder whether some of us just aren't susceptible to catching CMV given that the vast majority of the population are positive and we must be constantly coming into contact with the virus yet we haven't picked it up.
Its interesting though that so many of us on this thread are CMV- ...