This report examines trends in the prevalence of obesity over the past decade among U.S. active component service members and civilians, ages 17-62 years, overall and by sex, comparing age-standardized distributions of body mass index.

Since 2004, MSMR has published annual updates on the incidence of cold weather injuries affecting U.S. Armed Forces members for the five most recent cold seasons. This 2025 report discusses the occurrence of frostbite, immersion hand and foot injuries, hypothermia, as well as “other specified and unspecified effects of reduced temperature.”

This report describes the seven-year prevalence of five perinatal mental health disorders among U.S. active duty service women: trauma and stressor-related disorders, anxiety and panic disorders, depressive disorders, suicidal ideation or attempt, and eating disorders.

This report summarizes the numbers, types and incidence rates of mental health disorder diagnoses among U.S. active component service members over a five-year surveillance period.

This annual update summarizes incidence rates and trends of the most frequent sexually transmitted infections among U.S. active component service members: chlamydia, gonorrhea, syphilis, human papilloma virus (HPV), and genital herpes simplex virus (HSV).

This report describes the incidence of gonorrhea and chlamydia in male Air Force basic trainees and compares follow up testing and clinical outcomes with female basic trainees.

This retrospective evaluation utilized contact tracing data collected by Army Public Health Nursing to identify sexual networks of U.S. service members infected with chlamydia at a single military base.

This annual update summarizes numbers and trends of new HIV antibody seropositivity among U.S. active and reserve component service members, in addition to National Guard members.

This study employed multiple forecasting methods in an effort to predict future Lyme disease and tick bites among U.S. Military Health System beneficiaries, with comparisons to actual outpatient encounter data.

MSMR publishes a monthly summary of reportable medical events documented in the Disease Reporting System internet by Military Health System care providers and public health officials.

This report provides cumulative seasonal influenza hospitalization rates of service members, stratified by sex, age group, race and ethnicity, branch of service, recruit site, and location, both in the U.S. and overseas.

This study developed predictive models to forecast future long COVID diagnoses and compared each model prediction to observed diagnoses.

This report describes associations between prior body mass index and prior physical fitness performance with COVID-19 hospitalization, adjusting for age, race and ethnicity, vaccination, and comorbidities.

This report provides updated data and analysis on measles, mumps, rubella and varicella cases from 2019 through 2024, describing trends among U.S. Military Health System beneficiaries and stratifying cases by immunization status.

This study evaluated associations between COVID-19 infection during pregnancy and adverse outcomes, along with any changes in association for pregnant women who received COVID-19 vaccinations.