BOSTON — Sen. Edward Kennedy will not immediately return to Washington after suffering a seizure shortly after the inauguration of President Obama.

A Kennedy spokeswoman said today the Massachusetts Democrat will instead work out of Florida, where he previously spent time recuperating from brain cancer treatment. There is no date for his return to Washington.

Kennedy has been spearheading the effort to pass a comprehensive health care plan under the new administration.

The 76-year-old lawmaker was stricken at a legislative luncheon following Obama's swearing-in. He spent the night in the hospital after doctors diagnosed him with "simple fatigue" following the frigid outdoor ceremony and warm indoor reception.