“…It causes diseases ranging from relatively benign infections, such as sore throats, to severe invasive diseases, like streptococcal toxic shock syndrome and acute rheumatic fever (ARF) (1,2). The rate of mortality of invasive GAS infections, especially those with ARF, is high in developing countries, and the majority of them develop rheumatic heart disease (RHD) (1,3,4). In Morocco, two-thirds of children with ARF have a history of sore throat, of whom 53.1% de-velop RHD and 2.7% die (4).…”