Incidence of periventricular/intraventricular hemorrhage in very low birth weight infants: a 15-year cohort study.

Objective: To assess the incidence of periventricular/intraventricular hemorrhage (PIVH) in very low birth rate neonates.

Methods: This was a prospective cohort study conducted on a sample of very low birth weight infants over a 15-year period. Neonates who did not undergo cerebral ultrasonography, had malformations affecting the central nervous system, or died within the first 24 hours of life were excluded.

Early exposure to yellow fever vaccine during pregnancy.

Objective: To investigate the association of Yellow Fever Vaccination (YFV) during pregnancy with the presence of structural defect in exposed babies.

Methods: An observed/expected frequencies study, before and after the vaccination campaign against YF was designed. 304 babies exposed to YFV during the prenatal period underwent dysmorphological examinations.