“…These authors suggest a model based on the Brazilian Information System for Notificable Diseases (SINAN) or the use of data from the Hospital Information System of the Brazilian Unified National Health System (SIH/SUS). Two letters to the editors in response to the article discuss the strengths and the weaknesses of the proposal and bring new contributions to monitoring, extending it to severe maternal morbidity 3,4 . The adoption of a system similar to the Latin American Perinatal Information System (SIP; http://www.sipplus.org/), linked to the Latin American Center for Perinatology, Women and Reproductive Health (CLAP/SMR; https://www.paho.org/en/clap), is perhaps the most appropriate proposal for the Brazilian reality, considering the national expertise in information systems 10 , the specificities of obstetric events, and the possibilities of joint analysis of data from countries in the region 11,12,13 .…”