At the request of the Government of Jamaica and under the direction of U.S. Southern Command, U.S. Marines and Sailors from the 22nd Marine Expeditionary Unit have commenced foreign humanitarian assistance operations in response to Hurricane Melissa, which struck the region on Oct. 28, 2025.

Do you get prescription drugs through the TRICARE Pharmacy Program? You may have new copayments starting Jan. 1, 2026.

TRICARE Open Season begins today, Nov. 10! Starting today, you have the opportunity to make changes to your TRICARE plan. This year’s open season lasts through Tuesday, Dec. 9. This is your annual chance to sign up for a health plan or change your coverage. Any changes you make will go into effect on Jan. 1, 2026.

As 2025 comes to a close, now is the time to start thinking about your family’s health care options for next year. You should know that your TRICARE health plan costs will change starting Jan. 1, 2026. Depending on your plan, these costs may include enrollment fees, premiums, cost-shares, and copayments.

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.