MT Hawkes, W Vaudry. Nonpolio enterovirus infection in the neonate and young infant. Paediatr Child Health 2005;10(7):383-388.Nonpolio enterovirus infections are common in the neonatal period, accounting for a large portion of febrile illness during the summer months. Unlike older children and adults, some neonates with enterovirus infection progress to multisystem disease and death. Multiple clinical syndromes of varying severity are associated with neonatal enterovirus infection: asymptomatic viral shedding, nonspecific febrile illness, aseptic meningitis, hepatic necrosis and coagulopathy, and myocarditis. In the present paper, a typical case of neonatal febrile illness is presented and the English-language literature is reviewed with respect to enteroviral infection in early infancy. The virology, epidemiology, transmission, clinical features, diagnosis and treatment of neonatal enteroviral infection are presented. Although the majority of infections in the neonate are benign, timely diagnosis in the febrile neonate will expedite efficient management. Clinicians also need to recognize the clinical manifestations and risk factors for severe disease to anticipate complications and implement intensive management of infants at high risk of adverse outcomes.
CASE PRESENTATIONA six-day-old boy presented in June with lethargy and a rash. He was born at term by repeat elective Cesarian section to a 30-year-old G4P3 mother after an uneventful pregnancy. The infant's birth weight was 3625 g and there were no perinatal complications. The mother and infant were discharged home on day 3 of life. On day 6, the infant became lethargic, would not wake for feeding, and had a weak suck and cry. His mother had developed fever, chills and nausea three days postpartum and had noted a rash on her abdomen that spread to her extremities. On examination, the baby had normal vital signs and was afebrile. Pertinent findings were hypotonia, delayed capillary refill time and a maculopapular rash over the trunk. Laboratory investigations revealed a white blood cell (WBC) count of 16.5×10 9 /L, a hemoglobin concentration of 140 g/L and liver enzymes within normal limits. Examination of the cerebrospinal fluid (CSF) revealed a WBC count of 4×10 6 /L, a red blood cell count of 19×10 6 /L, protein of 0.75 g/L and glucose of 2.6 mmol/L. Bacterial cultures of blood, urine and CSF were performed. Empirical antimicrobial therapy was initiated with intravenous ampicillin, gentamicin and acyclovir, and discontinued after five days because all bacterial cultures were negative and the infant was clinically improving. The diagnosis of enteroviral meningitis was confirmed when the CSF viral culture yielded coxsackie virus group B after seven days of incubation. Coxsackie B was also isolated from cultures of stool and nasopharyngeal aspirate. CSF viral polymerase chain reaction (PCR) was not requested at initial sampling, and because the diagnosis was confirmed by viral culture and the infant was improving, a repeat collection was not performed for PC...