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CDC Issues Updated Guidance for Infants Born to Mothers with Possible Zika Infection During Pregnancy

OCT 19, 2017 | KRISTI ROSA
Today, October 19, 2017, in a new Morbidity and Mortality Weekly Report, the Centers for Disease Control and Prevention (CDC) released updated interim clinical guidance designed to help healthcare providers as they care for infants who were born to mothers with potential Zika virus infection while pregnant. 

In August 2017, the CDC, in collaboration with the American Academy of Pediatrics as well as the American College of Obstetricians and Gynecologists, hosted a meeting where clinical experts presented emerging evidence in the realm of Zika virus. These presentations focused on the diagnosis, evaluation, and management of infants with potential congenital Zika virus. The evidence presented was used to inform the updated guidance.

Despite the fact that Zika virus cases are down compared with this time last year, cases continue to spring up in other countries across the world and in the United States, which serves as a reminder: Zika is still a big public health threat, especially to pregnant women and their unborn children.

In fact, a recent CDC analysis found that about 1 in 12 infants who are born to mothers with confirmed Zika virus infection, come into the world with a related birth defect. If a mother is infected with the virus during pregnancy, she runs the risk of transmitting the virus to her fetus, who then runs the risk of developing congenital Zika syndrome (CZS). CZS is a pattern of birth defects that includes serious brain abnormalities, hearing loss, vision issues, and, most notably, microcephaly.

“There’s a lot we still don’t know about Zika, so it’s very important for us to keep a close eye on these babies as they develop,” CDC director Brenda Fitzgerald, MD, commented in the official press release. “Learning how best to support them will require a team approach between health care providers and families.”

What is the big takeaway from the updated interim guidance? The updated recommendations underscore the importance of pediatric healthcare providers carefully assessing the risk of congenital Zika virus infection. The recommendations also emphasize the need for close communication between pediatric health providers with obstetrical providers. Lastly, the recommendations stress the importance of remaining alert “for any problems that may develop in infants without birth defects born to mothers with possible Zika virus.”

In order to help healthcare providers make effective clinical management decisions, the guidelines define 3 different groups of infants: (1) infants born with birth defects consistent with CZS, who were born to mothers with possible Zika exposure during pregnancy, (2) infants who were not born with CZS-consistent birth defects, but were born to mothers with laboratory evidence of possible Zika infection during pregnancy, and (3) infants without CZS-consistent birth defects who were born to mothers with possible Zika exposure during pregnancy, but did not have any laboratory evidence of infection while pregnant.



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