Open anterior fontanel cerebral ultrasonography was performed in 113 children aged between 1 month and 2 years, infants with purulent meningitis and encephalitis. It revealed early CNS complications in 50 patients (44.2%). The treatment protocol was adjusted for different types of complications. All children were discharged home and referred for further care to paediatricians and neurologists. Transfontanel ultrasonography is of great value for evaluating different types of complications following CNS infections.