The American Academy of Pediatrics has published a clinical report on congenital cytomegalovirus infection, extending what the 2024-2027 Red Book carries. It covers epidemiology, the clinical picture of both symptomatic disease and infection presenting as isolated sensorineural hearing loss, diagnosis, initial evaluation of an affected infant, treatment of both presentations, and prevention, with key action statements.
The screening recommendation is the part worth acting on: hearing-targeted testing plus expanded testing, rather than hearing-targeted testing alone. The reason is a timing problem rather than a diagnostic one. Congenital cytomegalovirus is the commonest non-genetic cause of childhood sensorineural hearing loss, a substantial share of affected infants pass the newborn hearing screen and lose hearing later, and the diagnosis can only be made within the first three weeks of life - after that, a positive test cannot distinguish congenital from postnatal acquisition. Screening only those who fail the hearing screen therefore misses exactly the children whose loss is still to come.
India has no national congenital cytomegalovirus screening programme, and the three-week window is easily lost in a system where newborn hearing screening itself is inconsistent. The practical version is to send a saliva or urine polymerase chain reaction test within three weeks in any infant who fails the hearing screen, and in any infant with microcephaly, petechiae, hepatosplenomegaly, jaundice or growth restriction at birth.
- Test saliva or urine by polymerase chain reaction within the first three weeks of life; after that the result cannot establish congenital infection.
- Do not rely on a passed hearing screen to exclude it - hearing loss often appears later.
- Test any newborn with microcephaly, petechiae, hepatosplenomegaly, jaundice or growth restriction.
- Arrange serial audiology follow-up for a confirmed infection even when hearing is initially normal.
- Record the date of testing in the notes; the window, not the result, is what is usually lost.
Why it matters
The diagnosis is only available for three weeks and the hearing loss it predicts often arrives months later, so the test has to be ordered before the problem appears.
Don't overread it
A clinical report reflecting US practice and screening infrastructure; the diagnostic principles transfer, the programme does not.
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