Invasive pneumococcal disease in Spain 2023. Boletín Epidemiológico Semanal, Madrid, v. 32, n. 2, p. 74–93, 2024. DOI: 10.4321/s2173-92772024000200003. Disponível em: //revista.isciii.es/index.php/bes/article/view/1381. Acesso em: 2 feb. 2026.