Land use and cover maps for Mato Grosso State in Brazil from 2001 to 2017.

This paper presents a dataset of yearly land use and land cover classification maps for Mato Grosso State, Brazil, from 2001 to 2017. Mato Grosso is one of the world's fast moving agricultural frontiers. To ensure multi-year compatibility, the work uses MODIS sensor analysis-ready products and an innovative method that applies machine learning techniques to classify satellite image time series.

Outcomes of Zika virus infection during pregnancy: contributions to the debate on the efficiency of cohort studies.

Background: Zika infection during pregnancy (ZIKVP) is known to be associated with adverse outcomes. Studies on this matter involve both rare outcomes and rare exposures and methodological choices are not straightforward. Cohort studies will surely offer more robust evidences, but their efficiency must be enhanced.

Involvement of school students in fights with weapons: prevalence and associated factors in Brazil.

Background: Violence, as well as other behaviors, is often intensified during adolescence and early adulthood. The objective of this study is estimate the prevalence of Brazilian school students involvement in fights with weapons and to analyze the associated factors.

Methods: This is a cross-sectional study using data from the National School Student Health Survey conducted in 2012 with 9 grade elementary school students attending 2842 schools in all 27 Brazilian Federative Units.