Much of the observed wintertime increase of mortality in temperate regions is attributed to seasonal influenza. A recent reanalysis of laboratory experiments indicates that absolute humidity strongly modulates the airborne survival and transmission of the influenza virus. Here, we extend these findings to the human population level, showing that the onset of increased wintertime influenza-relat...

Demographic and epidemiological transition models have seldom been debated within the Brazilian scientific community. This study aims to critically review the studies based on such transition models, analyzing their contributions and limitations for health research in Brazilian cities. Data from the city of Belo Horizonte were used to illustrate the theoretical issues raised in this paper. A to...

We prospectively studied the prognostic significance of conjugate eye deviation in 80 patients with acute stroke and compared the 3-month mortality and disability of these patients to those of the Tilburg epidemiological study of stroke. Mortality of patients with conjugate eye deviation was higher (41%) than for the general stroke population (34%), but this difference was not statistically sig...

BACKGROUND Studies on natural hazard mortality are most often hazard-specific (e.g. floods, earthquakes, heat), event specific (e.g. Hurricane Katrina), or lack adequate temporal or geographic coverage. This makes it difficult to assess mortality from natural hazards in any systematic way. This paper examines the spatial patterns of natural hazard mortality at the county-level for the U.S. from...

Stroke is one of the leading causes disability and mortality. Both short long sleep durations are associated with adverse health outcomes. Cross-sectional studies have shown an increased prevalence stroke in sleepers. Long duration increases incidence mortality prospective epidemiological studies. Accumulating evidence suggests that magnitude association between appears to be stronger for longe...