Cytomegalovirus (CMV) and Pregnancy

11-12 weeks pregnant, Health advice

Hello Parents,

This entry will deal with the infection caused by cytomegalovirus, or CMV, which is a lot easier to write and say, right?


In this article:



You really should know that a cytomegalovirus infection is the most frequent congenital infection during pregnancy. It occurs more than Zika and HIV combined, and even so, it’s still misunderstood by parents.

While in most cases, the virus is harmless for infected people, in certain conditions it can cause a more serious infection with important repercussions. These can be people with a weak or low immune system, people who have had transplants, and pregnant women. Of course, I will deal with this last case to explain what happens during pregnancy during a CMV infection. I will also talk about possible repercussions for the future mother and congenital or neonatal infection repercussions for the baby.

Today, we know that many congenital defects in babies are caused by CMV infections. That is why I think it important to tell you more about this infection. You can then recognise the symptoms and understand the preventative steps taken.

Defining Cytomegalovirus

Cytomegalovirus part of the same family as herpes. Some define it as “Human Herpes Virus 5” (Health Canada: Herpes Simplex Virus 5). This infection’s characteristics are very similar to those in the same family. These include infectious mononucleosis, roseola, chicken pox and Zona.

Read the next part of this entry, CMV Infection Risks and Transmission.

Photo credit: tashatuvango

Discover our videos

Subscribe to a monthly or quarterly package now to access full videos.

Becoming a Parent and Anxiety

Becoming a Parent and Anxiety

In this video, I am accompanied by Dr. Gabriel Mélançon, a psychologist, and Karen Chabot, a sexologist completing a doctorate
Breastfeeding : Engaging with my baby

Breastfeeding : Engaging with my baby

What happens during the first moments with your baby? How does the body prepare for breastfeeding? Marie talks with new
Medications During Pregnancy and Breastfeeding

Medications During Pregnancy and Breastfeeding

Do you know which medications are allowed during pregnancy? What can you take for nausea or headaches? What about a
Newborn discomforts

Newborn discomforts

Newborn conjunctivitis, seborrheic dermatitis (or cradle cap), bloating, regurgitation, vomiting, reflux and colic. Marie frequently saw these newborn ailments during

Discover other articles

Risk factors in pregnant women which suggest support socks might be necessary

Risk factors in pregnant women which suggest support socks might be necessary

To read the previous part, go to Support Socks during Pregnancy – Yes or No? She has a history of vascular disorders, venous insufficiency disorders
Baby Skin Conditions

Baby Skin Conditions

Many types of newborn skin conditions and birthmarks exist, including heat rash, erythema toxicum, newborn acne, hemangioma, nevus simplex, Mongolian spot and many more! When
The Potential Effects of Cannabis during Pregnancy

The Potential Effects of Cannabis during Pregnancy

To learn more about cannabis, read the previous part — Cannabis Use by a Pregnant Woman. Article updated June 1, 2023. Many potential effects of
Who should I invite to my delivery?

Who should I invite to my delivery?

My name is Claire, and I was wondering who will be with my partner and me during labour and childbirth. I don’t know if I

Cytomegalovirus (CMV) and Pregnancy

Par Marie Fortier Temps de lecture: 1 min
0