A Case of SARS-CoV-19-Associated Encephalitis in a Neonate

ABSTRACT

Objective: To describe a case of SARS-CoV-19-associated encephalitis in a neonate. Method(s) Case report. Report A 9-day-old term neonate presented with two focal motor seizures (right upper limb jerking and facial twitching). He had a 1-day history of coryzal illness with reduced feeding, but was afebrile. Antenatal course was uneventful. He was born at term via vaginal delivery. He did not require resuscitation or admission to SCBU. Maternal history was notable for symptomatic SARS-CoV-19 infection at time of delivery. Two siblings subsequently tested positive for SARS-CoV-19. He had further seizures in the emergency department and was loaded with phenobarbitone. The infant was stabilised locally and transferred to a tertiary paediatric hospital for the management of neonatal sepsis. He never required respiratory support. However, he was diffusely hypotonic with poor suck, necessitating nasogastric feeding. Nasopharyngeal PCR was positive for SARS-CoV-19. Lumbar puncture microscopy was negative (WCC 6). All CSF bacterial and viral investigations were negative. CSF testing of SARS-CoV-19 was not available. Brain MRI revealed bilateral asymmetric areas of reduced diffusivity involving the subcortical white matter, medulla and the corpus callosum with frontal lobe predominance. He made a full neurologic recovery with supportive therapies and was discharged following a 9-day admission. He had no further clinical seizures and phenobarbitone was successfully weaned pre-discharge. Conclusion(s) In the absence of another aetiology or antenatal risk factor, SARS-CoV-19 infection was presumed causative in this case of focal seizures and white matter changes in this term neonate. White matter abnormalities on MRI imaging are reported in neonates with seizures in the context of other viral infections. Single case reports have been published of SARS-CoV-19 infection with associated abnormal MRI brain findings, particularly diffusion abnormalities of the corpus callosum, as seen in our case.