Toward communities as systems: a sequential mixed methods study to understand factors enabling implementation of a skilled birth attendance intervention in Nampula Province, Mozambique.

Background: Skilled birth attendance, institutional deliveries, and provision of quality, respectful care are key practices to improve maternal and neonatal health outcomes. In Mozambique, the government has prioritized improved service delivery and demand for these practices, alongside "humanization of the birth process." An intervention implemented in Nampula province beginning in 2009 saw marked improvement in institutional delivery rates.

Optimistic perception of HIV/AIDS, unprotected sex and implications for prevention among men who have sex with men, São Paulo, Brazil.

Background: This study examines the association between optimistic perceptions about AIDS and unprotected sex among men who have sex with men (MSM) in the city of São Paulo, Brazil.

Methods: A cross-sectional study was carried out among MSM in leisure areas of São Paulo in 2003. We interviewed 161 participants aged 18-30 years.