The outbreak in eastern Congo, considered the fastest-growing in history, has killed over 2,000 people out of more than 4,300 cases. The outbreak was declared on May 15, but health authorities now say sequencing showed it began months earlier, in February

At least 1,000 of the deaths have occurred in the past three weeks. A total of 4,381 Ebola cases across five provinces of the DRC have been confirmed as of Tuesday, including 2,011 deaths. The outbreak is the fastest-growing on record in the Central African country