This study characterizes all medically diagnosed bites and stings in U.S. active component service members from snakes, venomous fish, other venomous marine animals, arthropods, and insects identified through medical data from the Defense Medical Surveillance System.

This study addresses an important gap in epidemiological data on 11 arboviruses present in Papua New Guinea by providing updated serology data from 185 Papua New Guinea military personnel.

MSMR publishes a monthly update of reportable medical events for both active component members and Military Health System beneficiaries. Military Health System care providers and public health officials document reportable medical events through the Disease Reporting System internet.

This case report presents a unique instance of S. coagulans in a woman with a history of breast cancer and implant reconstruction who presented with a S. coagulans infection in a breast implant.

This report examines whether health-related quality of life—how mental, emotional, and physical capabilities affect daily functioning—is associated with service women’s readiness.

This report describes the investigation and findings of a major outbreak of adenovirus following the re-introduction of the adenovirus vaccine in 2011.

This guest editorial from the Thermal and Mountain Medicine Division of the U.S. Army Research Institute of Environmental Medicine provides recent evidence about individualized factors that may influence heat-related illness risk and strategies to prepare for training in heat.

This letter to the editor addresses the methodology from the article Correlation Between Mean Temperature and Incidence of Tick-borne Diseases Among Active Duty Service Members in the Contiguous U.S., 2000-2023, published in the March 2025 issue of MSMR.

MSMR publishes a monthly update of reportable medical events for both active component members and Military Health System beneficiaries. Military Health System care providers and public health officials document reportable medical events through the Disease Reporting System internet.

This annual update provides more recent data on the incidence of exertional hyponatremia, a condition in which water and electrolytes lost during or after heavy exertion are replaced only by water, which can lead to death or serious morbidity if left untreated.

This annual update provides more recent data on the incidence of exertional rhabdomyolysis, a pathologic muscle breakdown associated with strenuous physical activity.

Since 2001, MSMR has published regular updates on the incidence of heat illness among U.S. active component service members. This update presents summaries of heat stroke and heat exhaustion case counts, incidence rates, and locations between 2020 and 2024.

This descriptive study examines and characterizes unintended pregnancies diagnosed after long-acting reversible contraception placement in active duty service women, including pregnancy due to long-acting reversible contraception failure as well as undetected pregnancies.

This Surveillance Snapshot reports on mid-season analysis by the Department of Defense Global Respiratory Pathogen Surveillance Program of influenza vaccine effectiveness for the 2024-2025 influenza season.

This editorial from the U.S. Army Research Institute of Environmental Medicine discusses increased research focus on the female warfighter, to improve knowledge and awareness of individualized risk management for individuals exposed to extreme terrestrial environments, both in mission-critical scenarios as well as training.