The best health news of 2018
Health workers in Haiti are battling to get the latest vaccines on the ground after a devastating earthquake in October killed more than 200,000 people.
The disease, which causes fevers, is now the most deadly pandemic in modern times.
The U.S. has pledged $6.7 billion in aid, but more than half of that has been earmarked for the Haitian government.
Here are the top five things you need to know.