This year's annual update on the incidence of heat illness among U.S. active duty service members presents the case counts and incidence rates of heat illnesses between 2018 and 2022, as well as the locations of heat illness case occurrences during this period. Heat stroke and heat exhaustion are summarized separately.

Letter to the Editor commenting on November 2022 (volume 29 issue 11) MSMR Brief Report, "Pediatric Vaccine Completion and Compliance Among Infants Born to Active Duty Service Members, 2006-2016"

This annual update provides rates of incidence and infection of STIs among active component U.S. service members.

Graph illustrating data on Zika virus infections among service members and their dependents, 2013-2022

This article provides an annual update of rates and incident infections of malaria species among U.S. service members.

Notice of emerging tick-borne pathogen detected in January 2023 by the Vector-Borne Disease Branch of the Defense Center Public Health-Aberdeen.

Retrospective of Dr. Francis L. O’Donnell’s 11-year tenure as MSMR’s Editor in Chief

This brief report presents United States Coast Guard hospitalization data for fiscal year 2021 and examines its data completeness, as annual Department of Defense data have not included Coast Guard data since 2015, and describes differences in utilization.

This Historical Perspective discusses catastrophic casualties among U.S. and Japanese forces due to failed supply lines during World War II in the Pacific.

The new MSMR Editor-in-Chief, Dr. Andrew Wiesen, a retired Army physician, provides his perspective on the importance of the MSMR and his expectations for its future.

Incidence and Management of Chronic Insomnia, Active Component, U.S. Armed Forces, 2012 to 2021.

Increased Prevalence of Overweight and Obesity and Incidence of Prediabetes and Type 2 Diabetes During the COVID-19 Pandemic, Active Component Service Members, U.S. Armed Forces, 2018 to 2021.