You make the call: handling a possible flu epidemic

1 of 4, January
About 300 new recruits at an Army base come down with the flu. About ten of those recruits have symptoms similar to the strain of flu that killed 21 million people in 1918-19. One of those 10 Army recruits dies.

researcher in a bunny suit in a lab What new clues will a CDC researcher find in testing the new strain of flu?
Courtesy Center for Disease Control