In their important recent article, Townsend and colleagues conclude that the number of confirmed congenital cytomegalovirus (CMV) diagnoses is lower than expected.1 This is unsurprising as only 5%–10% of infected children are symptomatic at birth.2 However, a further 10%–15% of infected infants will develop long-term sequelae, despite being asymptomatic and therefore undiagnosed at birth.3 We report an Irish experience.

We calculated the incidence and reviewed the outcomes of symptomatic cCMV in babies born between …