What causes cytomegalovirus (CMV)?

What causes cytomegalovirus (CMV)?

CMV is most often caused by a reactivation of CMV acquired long before your transplant. If you develop your first CMV infection, the virus likely came from your transplanted organ. (The donor might have been exposed to the virus.) CMV is transmitted by contact between mucous membranes (the mouth and genitals) and live virus present in the secretions of infected CMV patients.