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Congenital cytomegalovirus infection — Clinical Guidelines

Overview

Congenital cytomegalovirus (cCMV) infection is a leading cause of non-genetic sensorineural hearing loss and neurodevelopmental disabilities in infants, often presenting asymptomatically at birth 1 8 9.

Diagnosis

Clinical Presentation: Asymptomatic or with symptoms including hearing loss, developmental delays, and neurological abnormalities 1 8.

Diagnostic Tests:

- Urine PCR: Highly sensitive for detecting CMV DNA 1 8. - Cerebrospinal Fluid (CSF) Analysis: Useful in symptomatic cases 8. - Blood Tests: Serological testing for maternal and infant antibodies 9.

Screening: Not universally recommended due to lack of effective prenatal therapy 3.

Management

Symptomatic Infants:

- Ganciclovir: Used for severe cases, particularly those with neurological involvement 8. - Valganciclovir: Limited evidence for prenatal use; effectiveness and safety remain controversial 3.

Preventive Measures:

- Hygiene Practices: Reducing exposure to CMV through hand hygiene and avoiding contact with young children's urine and saliva 4 5 10.

Hearing and Speech Therapy: Early intervention recommended for detected impairments 1.

Special Populations

Pregnancy:

- Screening: Not routinely recommended due to lack of effective prenatal treatment options 3 10. - Management of Seroconversion: Amniocentesis, fetal MRI, and fetal blood analysis may be considered based on practitioner discretion 7.

Pediatrics: Early identification and intervention crucial for mitigating developmental impacts 1 8.

Key Recommendations

Screening for cCMV: Not routinely recommended for all pregnant women due to limited prenatal treatment options (Evidence: Moderate 3 10).

Early Intervention: Implement speech and hearing therapy for infants diagnosed with cCMV-related impairments (Evidence: Strong 1).

Healthcare Provider Education: Enhance awareness and knowledge among healthcare providers regarding cCMV prevention and management practices (Evidence: Moderate 2 4 5).

Hygiene Practices: Advise pregnant women and caregivers to adopt strict hygiene measures to reduce cCMV transmission risk (Evidence: Expert opinion 4 5).

References

1 Cherches A, Vasireddy A, Mizelle C, Ogunsusi M, Riska K, Raynor E. Evaluating speech dysfunction in patients with congenital cytomegalovirus - A multicenter retrospective study. International journal of pediatric otorhinolaryngology 2026. link 2 Rybak-Krzyszkowska M, Huras H, Górczewski W, Górecka J, Dradach J, Massalska-Wolska M et al.. Congenital cytomegalovirus awareness and screening practices among healthcare providers in Poland: The CASP-D web-based cross-sectional study. European journal of obstetrics, gynecology, and reproductive biology 2025. link 3 D'Antonio F, Marinceu D, Prasad S, Khalil A. Effectiveness and safety of prenatal valacyclovir for congenital cytomegalovirus infection: systematic review and meta-analysis. Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2023. link 4 Boccherini C, D'Ambrosio V, Corno S, Vena F, Pajno C, Piccioni MG et al.. An observational study to assess Italian obstetrics providers' knowledge about preventive practices and diagnosis of congenital cytomegalovirus. Journal of perinatal medicine 2020. link 5 Shand AW, Luk W, Nassar N, Hui L, Dyer K, Rawlinson W. Cytomegalovirus (CMV) infection and pregnancy-potential for improvements in Australasian maternity health providers' knowledge. The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 2018. link 6 Miner JJ. Congenital Zika virus infection: More than just microcephaly. Science translational medicine 2017. link 7 Carrara J, N'Diaye DS, Azria E, Launay O, Rozenberg F, Yazpandanah Y et al.. Management of Cytomegalovirus Seroconversion during Pregnancy in France. Fetal diagnosis and therapy 2016. link 8 Duval M, Park AH. Congenital cytomegalovirus: what the otolaryngologist should know. Current opinion in otolaryngology & head and neck surgery 2014. link 9 Nigro G, Adler SP. Cytomegalovirus infections during pregnancy. Current opinion in obstetrics & gynecology 2011. link 10 . Knowledge and practices of obstetricians and gynecologists regarding cytomegalovirus infection during pregnancy--United States, 2007. MMWR. Morbidity and mortality weekly report 2008. link 11 Güneş T, Kurtoğlu S, Cetin N, Oztürk MA, Topaloğlu N. Raine syndrome associated with cytomegalovirus infection. The Turkish journal of pediatrics 2005. link 12 Thomas IT, Soothill JF, Hawkins GT, Marshall WC. Transfer-factor treatment in congenital cytomegalovirus infection. Lancet (London, England) 1977. link91887-6)

Congenital cytomegalovirus infection