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.

This annual summary of the numbers, rates, trends, risk factors, and locations of exertional heat injury occurences including exertional rhabdomyolysis includes data from 2018 to 2022.

This annual update of the incidence of extertional hyponatremia summarizes the frequencies, rates, trends, geographic locations, and both demographic and military characteristics of incident cases of exertional hyponatremia among active component service members, from 2007 to 2022.

An introduction to this issue of the MSMR, which provides an annual update on adverse health consequences most often associated with training or operations in high heat environments

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

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

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

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.

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.