An update on vaccination in preterm infants.

Objective: The objective of this article is to review the most current literature on vaccines, focusing on their safety, immunogenicity, and efficacy in preterm newborns, aiming to improve vaccine coverage in this population.

Data Source: Most recent scientific publications addressing the immunization of preterm newborns.

Data Synthesis: Despite its immunological immaturity, vaccination is well tolerated by preterm infants, and protective immune responses are observed, but some studies have shown that preterm infants undergo unjustified delays in their vaccination schedule.

[Infant breastfeeding prevalence in the city of São Paulo, Brazil, 2008].

This cross-sectional epidemiological study based on AMAMUNIC aimed to evaluate infant breastfeeding (BF) prevalence and duration in São Paulo, Brazil. Sample size was based on a cluster calculation, selecting 35 primary care units and 35 infants (< 1 year of age) per unit. A total of 1,424 interviews with mothers were performed (56 items on feeding in the previous 24 hours) in August 2008, subsequently analyzed according to residential areas: Central West, East, North, Southeast, and South.

Longitudinal study of Cystatin C in healthy term newborns.

Objective: The purpose of this study was to determine the levels of Cystatin C in healthy term newborns in the first month of life.

Introduction: Cystatin C may be a suitable marker for determining the glomerular filtration rate because it is not affected by maternal renal function.

Methods: Cohort study.