Marjolein J Korndewal1,2, Anne Marie Oudesluys-Murphy3, Aloys C M Kroes2, Marianne A B van der Sande1,4, Hester E de Melker1, Ann C T M Vossen2. 1. Center for Infectious Diseases, Epidemiology and Surveillance, National Institute for Public Health and the Environment, Bilthoven, the Netherlands. 2. Department of Medical Microbiology, Leiden University Medical Center, Leiden, the Netherlands. 3. Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, the Netherlands. 4. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands.
Abstract
AIM: This study aimed to estimate long-term impairment attributable to congenital cytomegalovirus infection (cCMV). METHOD: This nationwide cohort study retrospectively assessed cCMV in children born in 2008 in the Netherlands, testing 31 484 stored neonatal dried blood spots. Extensive medical data of cCMV-positive children (n=133) and matched cCMV-negative comparison children (n=274) up to 6 years of age were analysed. RESULTS: Moderate to severe long-term impairment was diagnosed in 24.8% (33 out of 133) of all cCMV-positive children (53.8% in symptomatic, 17.8% in asymptomatic), compared with 12.0% (33 out of 274) of cCMV-negative children. Sensorineural hearing loss was seen only in five cCMV-positive children (3.8%). Developmental delays were diagnosed more often in cCMV-positive children than cCMV-negative children: motor (12.0% vs 1.5%), cognitive (6.0% vs 1.1%), and speech-language (16.5% vs 7.3%). Long-term impairment in multiple domains was more frequent in symptomatic (19.2%) and asymptomatic (8.4%) cCMV-positive children than cCMV-negative children (1.8%). INTERPRETATION: Children with cCMV were twice as likely to have long-term impairment up to the age of 6 years, especially developmental delays and sensorineural hearing loss, than cCMV-negative comparison children, with a risk difference of 12.8%. These insights into the risk of cCMV-associated impairment can help optimize care and stimulate preventive measures. WHAT THIS PAPER ADDS: Congenital cytomegalovirus infection (cCMV) leads to impairment in 25% of cases. Fifty per cent of children with cCMV symptoms at birth have long-term impairment. The risk difference of moderate to severe long-term impairment between children with and without cCMV is 13%, attributable to cCMV. cCMV leads to motor, cognitive, and speech-language developmental delay in children.
AIM: This study aimed to estimate long-term impairment attributable to congenital cytomegalovirus infection (cCMV). METHOD: This nationwide cohort study retrospectively assessed cCMV in children born in 2008 in the Netherlands, testing 31 484 stored neonatal dried blood spots. Extensive medical data of cCMV-positive children (n=133) and matched cCMV-negative comparison children (n=274) up to 6 years of age were analysed. RESULTS: Moderate to severe long-term impairment was diagnosed in 24.8% (33 out of 133) of all cCMV-positive children (53.8% in symptomatic, 17.8% in asymptomatic), compared with 12.0% (33 out of 274) of cCMV-negative children. Sensorineural hearing loss was seen only in five cCMV-positive children (3.8%). Developmental delays were diagnosed more often in cCMV-positive children than cCMV-negative children: motor (12.0% vs 1.5%), cognitive (6.0% vs 1.1%), and speech-language (16.5% vs 7.3%). Long-term impairment in multiple domains was more frequent in symptomatic (19.2%) and asymptomatic (8.4%) cCMV-positive children than cCMV-negative children (1.8%). INTERPRETATION:Children with cCMV were twice as likely to have long-term impairment up to the age of 6 years, especially developmental delays and sensorineural hearing loss, than cCMV-negative comparison children, with a risk difference of 12.8%. These insights into the risk of cCMV-associated impairment can help optimize care and stimulate preventive measures. WHAT THIS PAPER ADDS: Congenital cytomegalovirus infection (cCMV) leads to impairment in 25% of cases. Fifty per cent of children with cCMV symptoms at birth have long-term impairment. The risk difference of moderate to severe long-term impairment between children with and without cCMV is 13%, attributable to cCMV. cCMV leads to motor, cognitive, and speech-language developmental delay in children.
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