This historical review discusses how the primary challenge presented by malaria infections in the Pacific theater during World War II was an inability to return recovered soldiers quickly to their units, with nearly one percent of malaria patients repatriated for ‘chronic malaria’.

Each month, MSMR publishes a reportable medical event update for active component service members as well as Military Health System beneficiaries, documented through the Disease Reporting System internet.

This report describes the incidence, clinical characteristics, specifically prior illness or immunization, clinical course, and electrodiagnostic findings of U.S. active component service members with clinically confirmed Guillain-Barré syndrome, from 2014 through 2022.

This case report details the process of differential diagnosis of Ross River virus in an individual diagnosed in Queensland, Australia in 2024. The report demonstrates the need for better clinical awareness among medical care providers for U.S. service members presenting with febrile illness or joint pain following deployment to Australia.

This Surveillance Snapshot provides chikungunya case counts for all Military Health System beneficiaries, from 2020 through 2024, utilizing Defense Health Agency data confirmed via medical chart review.

Each month, MSMR publishes a reportable medical event update for active component service members as well as Military Health System beneficiaries, documented through the Disease Reporting System internet.

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 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.

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 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.

Each month, MSMR publishes a reportable medical event update for active component service members as well as Military Health System beneficiaries, documented through the Disease Reporting System internet.

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.