The RISSC score makes it possible to estimate the risk of aggravation of a septic patient towards severe sepsis or septic shock in intensive care. The full score is a maximum of 49; the abbreviated score (omitting the microbiological variables) is a maximum of 37. The calculation makes it possible to stratify the risk of progression into 4 classes (0-8, 8-16, 16-24, >24) of increasing risk.