The study aims to promote the reduction of preventable maternal and neonatal deaths related to sepsis worldwide. To achieve this goal, the study will test new WHO criteria for early identification of maternal sepsis across both low and high resource settings, describe and analyze the frequency and outcomes of suspected or confirmed maternal sepsis for mothers and infants. Additionally, in the European participating countries, the study will describe the patterns of anti-microbial usage amongst women with suspected maternal sepsis, explore migration status amongst women with possible severe maternal infection and describe any variations in their management.