Over the past week, we asked our audience to share their questions on global diseases, which we would then answer in a story.
It's a topic that's been making headlines for the last two years, as Ebola and Zika, two diseases that previously had a low profile, became serious worldwide concerns.
Earlier this month, we gathered over 200 questions from our readers. We put three of them up for vote. More than 200 people voted, and this question submitted by reader Ian Matthews was the winner: