After the SARS-CoV-2 pandemic, we have witnessed an alarm indicating the increase in invasive group A streptococcus disease and SEIP launched a research network (PedGAS-net) to study these infections. On the other hand, given the significant burden of disease caused by GHG, there are initiatives promoted by the WHO for the study and research of vaccines applicable to all populations. Finally, in 2020, a strain with decreased susceptibility to penicillin was described, which would mean the emergence of a new resistance mechanism with important implications. The purpose of this review is to update knowledge of GAS disease.