Email this page To: From: Subject: Message: About CMV - CMV is a type of germ called a virus. If your child is a St. Jude patient, their immune system is probably weaker than normal. CMV can make them sick. - https://www.stjude.org/treatment/patient-resources/caregiver-resources/patient-family-education-sheets/prevent-control-infection/about-cmv.html A summary of this page will be sent along with your message I am a referring physician Yes, I would like to receive email updates. Send Email Your message has been emailed successfully. Thank you for your interest in St. Jude Children's Research Hospital.