This Surveillance Snapshot documents the frequencies, rates, trends, and distributions of various illnesses and injuries among members of the reserve component of the U.S. Armed Forces, based on standardized records from U.S. military and non-military medical facilities worldwide.

This report summarizes the nature, numbers, and trends of conditions of medical evacuations from CENTCOM and AFRICOM in 2024, with comparisons to the preceding four years.

MSMR publishes a monthly update for reportable medical events among active component service members as well as other beneficiaries of the U.S. Military Health System.

This historical review discusses the contextual factors that led to differing U.S. Army immunization strategies as well as outcomes for tetanus and diphtheria during the Second World War.

This study examines the trend in annual incidence of hypertension and hypertensive disease, as well as annual percentages of recorded high blood pressure measurements, among U.S. service members between 2018 and 2023, utilizing data from the Defense Medical Surveillance System.

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.