Heat disproportionately kills young people: Evidence from wet-bulb temperature in Mexico.

Recent studies project that temperature-related mortality will be the largest source of damage from climate change, with particular concern for the elderly whom it is believed bear the largest heat-related mortality risk. We study heat and mortality in Mexico, a country that exhibits a unique combination of universal mortality microdata and among the most extreme levels of humid heat. Combining detailed measurements of wet-bulb temperature with age-specific mortality data, we find that younger people who are particularly vulnerable to heat: People under 35 years old account for 75% of recent heat-related deaths and 87% of heat-related lost life years, while those 50 and older account for 96% of cold-related deaths and 80% of cold-related lost life years.

Research priorities for global food security under extreme events.

Extreme events, such as those caused by climate change, economic or geopolitical shocks, and pest or disease epidemics, threaten global food security. The complexity of causation, as well as the myriad ways that an event, or a sequence of events, creates cascading and systemic impacts, poses significant challenges to food systems research and policy alike. To identify priority food security risks and research opportunities, we asked experts from a range of fields and geographies to describe key threats to global food security over the next two decades and to suggest key research questions and gaps on this topic.

The emergence of heat and humidity too severe for human tolerance.

Humans' ability to efficiently shed heat has enabled us to range over every continent, but a wet-bulb temperature (TW) of 35°C marks our upper physiological limit, and much lower values have serious health and productivity impacts. Climate models project the first 35°C TW occurrences by the mid-21st century. However, a comprehensive evaluation of weather station data shows that some coastal subtropical locations have already reported a TW of 35°C and that extreme humid heat overall has more than doubled in frequency since 1979.

Gastroesophageal reflux disease in primary care. Prevalence, epidemiology and Quality of Life of patients.

Aim: To determine the prevalence of typical symptoms of gastroesophageal reflux disease in a large group of patients consulting their general practitioners (GP) for diverse reasons, as well as the quality-of-life (QoL) of patients with such symptoms.

Patients And Methods: During the same day, participating GPs (N=3 200) systematically asked all of their patients about the presence of heartburn and regurgitation. For all patients who responded positively, the GPs filled in a questionnaire and the patient a specific QoL questionnaire.

[Spontaneous infection of ascitic fluid due to Salmonella typhimurium in a cirrhotic patient undergoing selective intestinal decontamination with norfloxacin].

Introduction: Spontaneous infection of ascitic fluid with Salmonella typhimurium is very rare and exhibits uncommon features.

Observation: A Child-Pugh C cirrhotic 47 year-old woman was hospitalised for fever and coma. Norfloxacin 400 mg per day had been introduced three months earlier as secondary prophylaxis for spontaneous bacterial peritonitis.