Introduction: Congenital syphilis is considered a severe public health problem because it accounts for approximately 40% of the perinatal mortality rates, 25% of stillbirths, and 14% of neonatal deaths, in addition to causing severe consequences for the fetus. This study aimed to describe the rates of congenital syphilis in children under one year of age in Brazilian capitals from 2009 to 2016. Methods: Ecological time series study, using rates of congenital syphilis in children under one year of age and living in Brazilian capitals. The Prais-Winsten regression model was used to assess the trend. Results: A total of 44,056 cases of congenital syphilis in children under one year of age were reported in Brazilian capitals between 2009 and 2016. The highest rate of congenital syphilis in children under one year of age occurred in 2016 in Porto Alegre (31.07/1,000 live births). The Northeastern capitals showed high rates, particularly the capital Recife (23.67/1,000 live births). Conclusions: Congenital syphilis represents a major challenge for public policies. The need for improvements in the quality of prenatal care is highlighted, as it is essential to reduce the alarming rates.

Sepsis is the organ dysfunction resulting from an infection associated with an unregulated host inflammatory response, which generates high mortality rates in Brazil. The aim of this stydy was to analyze the trend of early, late and post-neonatal mortality rates due to sepsis in Brazilian regions, from 2009 to 2018. This is an ecological study of time series. The trend of infant mortality from sepsis was analyzed using the International Classification of Diseases (ICD10) according to the place of residence (North, Northeast, Southeast, South and Midwest). Death Certificate data were collected from the Mortality Information System database. The temporal trend was analyzed using the Prais-Winsten estimate, interpreted as increasing, decreasing or stable, through the dependent variable (logarithm of mortality rates) and interdependent variables (years of the historical series). The Stata 14.0 statistical software was used. There were 39,867 infant deaths due to sepsis (78.67% for unspecified bacterial sepsis of the neonate ). Most of the children were male, had mixed ethnicity (black and white) , were born preterm with low birth weight and most mothers were 20-34 years old. There were decreasing trends in mortality rates from 2009 to 2018: early neonatal, in the Southeast (-3.57%), North (-3.33%) and South (-2.91%); late neonatal, in the South (-4.12%), Southeast (-4.53%), North (-4.55%) and Midwest (-6.21%); and post-neonatal, in the Northeast (-1.84%), North (-3.62%), Southeast (-3.83%) and Midwest (-5.81%). The Northeast showed a stable trend in early and late neonatal mortality rates. It was concluded that most regions showed a decreasing trend in mortality rates from sepsis in all age components, despite regional differences.

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