“…Group A streptococcus (GAS) diseases were reported to be common in developing countries [ 17 , 18 , 19 ] and among the indigenous populations in developed countries [ 10 , 15 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ], and reported to be endemic in low socioeconomic communities [ 9 , 20 , 30 ]. GAS diseases are also present in high socioeconomic communities, in conditions where people are in close proximity to one another for extended periods of time (for example, schools and care facilities) [ 8 , 36 , 37 , 38 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ].…”