More than a year after he was nominated, Dr. Vivek Murthy was confirmed as the next surgeon general Monday. Back in February, Murthy testified about his nomination before a Senate panel. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Dr. Vivek Murthy, President Obama's nominee to be the next U.S. surgeon general, testifies Tuesday on Capitol Hill before the Senate Health, Education, Labor and Pensions Committee hearing on his nomination. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

John Hartigan, proprietor of Vapeology LA, a store selling electronic cigarettes and related items, takes a puff from an electronic cigarette in Los Angeles. Reed Saxon/AP hide caption

itoggle caption Reed Saxon/AP