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Reportable medical events at Military Health System facilities through week 1, ending January 3, 2026

Image of MSMR 20264 Photo4. Reportable medical events are documented to monitor, control, and prevent the occurrence and spread of diseases.

4/1/2026 By: Matthew W.R. Allman, MPH; Anthony R. Marquez, MPH; Katherine S. Kotas, MPH; Kiara Scatliffe-Carrion, MPH

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Reportable Medical Events (RMEs) are documented in the Disease Reporting System internet (DRSi) by health care providers and public health officials throughout the Military Health System (MHS) for monitoring, controlling, and preventing the occurrence and spread of diseases of public health interest or readiness importance. These reports are reviewed by each service’s public health surveillance hub. The DRSi collects reports on over 70 different RMEs, including infectious and non-infectious conditions, outbreak reports, STI risk surveys, and tuberculosis contact investigation reports. A complete list of RMEs is available in the 2022 Armed Forces Reportable Medical Events Guidelines and Case Definitions.1 Data reported in these tables are considered provisional and do not represent conclusive evidence until case reports are fully validated.

Click on the table to open a Section 508-compliant PDF

Total active component cases reported per week are displayed for the top 5 RMEs for the previous year. Each month, the graph is updated with the top 5 RMEs, and is presented with the current month’s (December 2025) top 5 RMEs, which may differ from previous months. COVID-19 is excluded from these graphs due to changes in reporting and case definition updates in 2023.

FIGURE. Top 5 Reportable Medical Events by Calendar Week, U.S. Active Component Service Members, January 1, 2025–December 31, 2025 This is a multi-line graph that tracks the number of reported cases for the top five reportable medical events among U.S. active component service members by calendar week for the year 2025. The purpose is to visualize and compare the weekly trends of these five conditions. The vertical axis, representing the number of cases, uses a logarithmic scale. Throughout the year, Chlamydia consistently had the highest number of weekly cases, generally ranging from several hundred to over 1,000. Gonorrhea was the second most prevalent, with cases typically in the range of 100 to 200 per week. Norovirus, cold weather injuries, and syphilis showed more variability and generally lower case counts, with norovirus showing peaks in the earlier and later parts of the year, and cold weather injuries peaking in the winter weeks.

For questions about this report, please contact the Disease Epidemiology Branch at the Defense Centers for Public Health–Aberdeen. Email: dha.apg.pub-health-a.mbx.disease-epidemiologyprogram13@health.mil

References

  1. Armed Forces Health Surveillance Division. Armed Forces Reportable Medical Events. Accessed Feb. 28, 2024. https://health.mil/reference-center/publications/2022/11/01/armed-forces-reportable-medical-events-guidelines 
  2. Defense Manpower Data Center. Department of Defense Active Duty Military Personnel by Rank/Grade of Service. Accessed Feb. 28, 2024. https://dwp.dmdc.osd.mil/dwp/app/dod-data-reports/workforce-reports 
  3. Defense Manpower Data Center. Armed Forces Strength Figures for January 31, 2023. Accessed Feb. 28, 2024. https://dwp.dmdc.osd.mil/dwp/app/dod-data-reports/workforce-reports 
  4. Navy Medicine. Surveillance and Reporting Tools–DRSI: Disease Reporting System Internet. Accessed Feb. 28, 2024. https://www.med.navy.mil/navy-marine-corps-public-health-center/preventive-medicine/program-and-policy-support/disease-surveillance/drsi

Authors’ Affiliation

Defense Health Agency, Disease Epidemiology Branch, Defense Centers for Public Health–Aberdeen

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