Polio

Scientists have determined that one man has been shedding poliovirus for 28 years. What does this mean for polio eradication efforts?

• By Francie Diep

It's not over just because there aren't any more new cases, a new study shows.

• By Nathan Collins

Experts are debating whether an Ebola vaccine can eradicate the disease in 2015. They’re getting way ahead of themselves.

• By M. Sophia Newman

Trapped by the Cold War and scarred after a failed revolution, Hungary fought one of its greatest battles against polio.

• By Penny Bailey

As feared, the possibility of once rare or neglected diseases slopping out of the cauldron that is Syria is becoming more real.

• By Michael Todd

The oral vaccination used in the world's largest global health campaign, a successor to that first developed by Dr. Hilary Koprowski, who passed away this past weekend, comes with its own set of risks.

• By Lois Parshley