Colorado Department of Public Health and Environment

A Multistate Investigation of Serious Adverse Events, including Deaths, following Ceftriaxone Injections, September 2024–August 2025

BACKGROUND: Reports of ceftriaxone serious adverse events (SAEs), including deaths, from multiple jurisdictions during December 2024-January 2025 prompted a nationwide investigation to evaluate product safety, characterize SAEs, and assess for changes in baseline adverse event oc...

Total Ozone Reactivity Measurements Reveal Knowledge Gap in Volatile Organic Compound Emissions and Their Reactions

Abstract Total ozone (O 3 ) reactivity monitors (TORMs) were used to investigate biogenic volatile organic compound (BVOC) emissions from several ecosystems. Measurements were conducted in temperate deciduous North American forests, during the CABINEX and SOAS campaigns, on tundr...