Lola Madrid1,2, Rosauro Varo1,2, Quique Bassat1,2,3,4. 1. Centro de Investigação em Saúde de Manhiça (CISM), Maputo, Mozambique. 2. ISGlobal, Barcelona Ctr. Int. Health Res. (CRESIB), Hospital Clínic - Universitat de Barcelona, Barcelona, Spain. 3. ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain. 4. Pediatric Infectious Diseases Unit, Pediatrics Department, Hospital Sant Joan de Déu (University of Barcelona), Barcelona, Spain.