Jan 11 (Reuters) -

* U.S. HHS - ABOUT 15.9 MILLION PEOPLE IN U.S. SELECTED AFFORDABLE CARE ACT MARKETPLACE HEALTH PLAN SINCE START OF OPEN ENROLLMENT PERIOD ON NOVEMBER 1

* U.S. HHS - OPEN ENROLLMENT CONTINUES THROUGH JANUARY 15

* U.S. HHS - ABOUT 1.8 MILLION MORE PEOPLE HAVE SIGNED UP FOR HEALTH INSURANCE, OR A 13% INCREASE, FROM THIS TIME LAST YEAR