ABSTRACT
BACKGROUND: Surgical site infection (SSI) is a health-threatening complication following Caesarean section (CS); however, to our knowledge, there is no worldwide estimate of the burden of post-CS SSIs. Therefore, this systematic review and meta-analysis aimed to estimate the global and regional incidence of post-CS SSI and its associated factors. METHODS: We systematically searched international scientific databases for observational studies published from January 2000 to March 2023, without language or geographical restrictions. The pooled global incidence rate was estimated using a random-effects meta-analysis (REM), and then stratified by World Health Organization (WHO)-defined regions as well as by socio-demographic and study characteristics. We also analysed causative pathogens and associated risk factors of SSIs using REM. We assessed heterogeneity with I2. RESULTS: We included 180 eligible studies (207 datasets) involving 2,188,242 participants from 58 countries. The pooled global incidence of post-CS SSI was 5.63% (95% CI, 5.18%-6.11%). The highest and lowest post-CS SSI incidences were estimated for African (11.91%, 9.67-14.34%), and North-America (3.87%, 3.02-4.83%) regions, respectively. The incidence was significantly higher in countries with lower levels of income and human development index. The pooled incidence estimates have steadily increased over time, with the highest incidence rate during the COVID-19 pandemic (2019-2023). Staphylococcus aureus and Escherichia coli were the most prevalent pathogens. Several risk factors were identified. CONCLUSION: We found an increasing and substantial burden from post-CS SSIs, especially in low-income countries. Further research, greater awareness, and the development of effective prevention and management strategies are warranted to reduce post-CS SSIs.