A view from the starting line of the sixth annual Krispy Kreme Challenge in Raleigh, N.C., in 2010. The local children's health clinic takes its name from this annual charity race, which draws about 8,000 participants each year.
Courtesy of Dustin Bates
This year's flu vaccine protects against a few different virus strains, including the H1N1 seen here. The fuzzy outer layer is made of proteins that allow the virus to attach to human cells.
Rick and Letha Heitman, of Centennial, Colo., bought their health plan in 2015 through Colorado HealthOP, an insurance cooperative that will close at the end of the year. HealthOp's CEO says the co-op was "blindsided" when some promised federal subsidies failed to materialize.
John Daley/CPR News