The CDC is closely monitoring an "unknown disease” that has killed dozens in the Democratic Republic of Congo, the agency said in a statement on Monday.

The U.S. Centers for Disease Control and Prevention is closely monitoring an unknown disease that has killed dozens in the Democratic Republic of Congo, the agency said in a statement on Monday. "CDC is monitoring the situation closely and engaging with DRC officials on what support the agency can offer,

The World Health Organization is on the ground in the Democratic Republic of Congo (DRC) trying to crack the code on a mystery illness. More than 50 people have died from this illness since January. Health reporter Katherine Ward has been tracking developments and has the latest.