Come July, the yellow fever vaccine could be tough to find.
So, if you're traveling this summer to a place with the disease, you probably want to schedule a trip to a clinic sooner rather than later, the Centers for Diseases for Control and Prevention tells NPR.
"Take heed of our warning: Plan ahead," says CDC spokesperson Tom Skinner. "It may be difficult to get this vaccine. And if you can't get it, then you should postpone your trip."