Ebola
More than 11,300 people have died over the past two years in the world's worst Ebola epidemic, nearly all of them in Guinea, Liberia and Sierra Leone.
Seriously, that was crazy.
Chasity Hopson reportedly took the bait and handed in her stash for testing. She now faces charges.
"People don't die of Zika, people get it and they don't know they have it."
WHAT'S HAPPENING
The virus, which is spread by mosquitoes, is suspected to cause brain defects in newborns.
Two public health experts explain what the world needs to do better this time.
An international vaccine coalition took an unprecedented step this week.
The deal will help Merck wrap up clinical trials.
Officials had declared West Africa Ebola-free only days earlier.
There have been 10 flare-ups in areas thought to be Ebola-free.