Sunlight is essential for life, moderate exposure to ultraviolet radiation contributes to the synthesis of vitamin D, but much exposure can be harmful to skin, eyes and immune system. One of the biggest problems when exposed to the sun is skin cancer. In Mexico, around 1,000 cases occur annually; the states with the highest record of cancer deaths are: Mexico City, Mexico State, Veracruz y

This document reports on a carefully designed set of fixed and mobile reception tests in Mexico City on the DRM (Digital Radio Mondiale) system at a frequency in the uppermost shortwave broadcasting band – around 26 MHz – for local broadcasting. The testing was done during July 2005. These were not operational tests; that is, neither the transmitter antenna, nor antenna location, nor transmitte...

1 Environmental Toxicology Laboratory, Instituto Nacional de Canceroloǵıa, Avenida San Fernando 22, Tlalpan, 14080 México City, CP, DF, Mexico 2 Centre for Environmental Sciences, Hasselt University, 3500 Hasselt, Belgium 3Department of Public Health, Leuven University (KU Leuven), 3000 Leuven, Belgium 4Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates Univ...

Purpose: Determine if anterior stromal puncture (ASP) has a more effective decrease in symptomatology (pain, photophobia, and foreign body sensation) than annular keratotomy (AK) in patients with painful bullous keratopathy (PBK) and poor visual prognosis. Methods: Patients with PBK, refractory to combined medical treatment and poor visual prognosis were randomly assigned to one of two surgical...

Alkane hydrocarbons (propane, isobutane, and n-butane) from liquefied petroleum gas (LPG) are present in major quantities throughout Mexico City air because of leakage of the unburned gas from numerous urban sources. These hydrocarbons, together with olefinic minor LPG components, furnish substantial amounts of hydroxyl radical reactivity, a major precursor to formation of the ozone component o...

We assessed the influence of control for air pollution and respiratory epidemics on associations between apparent temperature (AT) and daily mortality in Mexico City and Monterrey. Poisson regressions were fit to mortality among all ages, children (ages 0-14 years) and the elderly (ages >or=65 years). Predictors included mean daily AT, season, day of week and public holidays for the base model....

In the mid 1990s, the HIV epidemic was initially impacting South Africa. Fear, stigma and denial surrounding sexual practices undermined treatment access and prevention initiatives. Significant strides have been made in reducing the HIV epidemic in South Africa and other areas in sub-Saharan Africa through effective programming and funding of prevention programs. Reinstatement of the Mexico Cit...

The extensive damage to high-rise buildings in Mexico City during the September 19, 1985 earthquake is primarily due to the intensity of the ground shaking exceeding what was previously considered credible for the city by Mexican engineers. There were two major factors contributing to the catastrophe, resonance in the sediments of an ancient lake that once existed in the Valley of Mexico, and t...

BACKGROUND Although the mortality burden of the devastating 1918 influenza pandemic has been carefully quantified in the United States, Japan, and European countries, little is known about the pandemic experience elsewhere. Here, we compiled extensive archival records to quantify the pandemic mortality patterns in 2 Mexican cities, Mexico City and Toluca. METHODS We applied seasonal excess mo...

Salmonella enterica subsp. enterica serovar Typhimurium strain 33676 was isolated in Mexico City, Mexico, from a patient with a systemic infection, and its complete genome sequence was determined using PacBio single-molecule real-time technology. Strain 33676 harbors an IncF plasmid carrying the extended-spectrum cephalosporin gene blaCMY-2 and a multidrug resistance IncA/C plasmid.