Medical history and clinical examinations are insufficient to exclude vertical human immunodeficiency virus transmission in healthy, at-risk adolescents
1 Paediatric Infectious Diseases Research Group, Institute for Infection and Immunity, St George's, University of London, London, UK.
2 Department of Pediatric Oncology, Hematology and Clinical Immunology, Center for Child and Adolescent Health, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.