Lithium isotopic evidence for enhanced reverse weathering during the Early Triassic warm period.

Elevated temperatures persisted for an anomalously protracted interval following pulsed volcanic carbon release associated with the end-Permian mass extinction, deviating from the expected timescale of climate recovery following a carbon injection event. Here, we present evidence for enhanced reverse weathering-a CO source-following the end-Permian mass extinction based on the lithium isotopic composition of marine shales and cherts. We find that the average lithium isotopic composition of Lower Triassic marine shales is significantly elevated relative to that of all other previously measured Phanerozoic marine shales.

Association of freeze-dried plasma with 24-h mortality among trauma patients at risk for hemorrhage.

Background: Blood products form the cornerstone of contemporary hemorrhage control but are limited resources. Freeze-dried plasma (FDP), which contains coagulation factors, is a promising adjunct in hemostatic resuscitation. We explore the association between FDP alone or in combination with other blood products on 24-h mortality.

Patterns of on-scene and healthcare system trauma deaths in the Western Cape of South Africa.

Background: Injuries account for 8% or 4.4 million deaths annually worldwide, with 90% of injury deaths occurring in low- and middle-income countries. Inter-personal violence and road traffic injuries account for most injury deaths in South Africa, with rates among the highest globally.

Safety and Immunogenicity of Live Viral Vaccines in a Multicenter Cohort of Pediatric Transplant Recipients.

Importance: Live vaccines (measles-mumps-rubella [MMR] and varicella-zoster virus [VZV]) have not been recommended after solid organ transplant due to concern for inciting vaccine strain infection in an immunocompromised host. However, the rates of measles, mumps, and varicella are rising nationally and internationally, leaving susceptible immunocompromised children at risk for life-threating conditions.

Objective: To determine the safety and immunogenicity of live vaccines in pediatric liver and kidney transplant recipients.

Feasibility of conducting a military-relevant multicenter cohort study to assess outcomes of early trauma resuscitative interventions in a prolonged care civilian setting.

Background: The Epidemiology and Outcomes of Prolonged Trauma Care (EpiC) study is a 4-year, prospective, observational, large-scale epidemiologic study in South Africa. It will provide novel evidence on how early resuscitation impacts postinjury mortality and morbidity in patients experiencing prolonged care. A pilot study was performed to inform the main EpiC study.