Hi, and thanks for your medical question on eHealth forum!
Actually cytomegalovirus can spread even from hand to mouth contact, by kissing, etc. Hence condoms are not the only protection. Hence to prevent spread of virus, good personal hygiene, avoiding kissing, etc will have to be practiced.
Those coming in contact with you can also get this virus through body fluids like saliva, sweat etc. Condoms should be used to prevent transmission of other STDs and retransmission from each other. Hope this helps. Take care!