Assessing the impact of pneumococcal conjugate vaccines on invasive pneumococcal disease using polymerase chain reaction-based surveillance: an experience from South Africa

Tempia S, Wolter N, Cohen C, Walaza S, von Mollendorf C, Cohen AL, Moyes J, de Gouveia L, Nzenze S, Treurnicht F, Venter M, Groome MJ, Madhi SA, von Gottberg A. Assessing the impact of pneumococcal conjugate vaccines on invasive pneumococcal disease using polymerase chain reaction-based surveillance: an experience from South Africa. BMC Infect Dis. 2015; 15: 450.