DAKAR, Senegal (AP) — The fastest-growing Ebola outbreak in history has killed more than 1,000 people in eastern Congo as health officials race to contain a virus with no approved vaccine or treatment.An update from Congo’s public ‌health ⁠institute on Wednesday said there have been 2,536 confirmed Ebola cases and 1,033 deaths, with at least 738 patients in isolation or hospitalized.The outbreak declared on May 15 is unlike most previous instances of Ebola spreading through communities because the Bundibugyo virus responsible has no approved vaccines or treatments.It is mostly concentrated in remote Ituri province, which accounts for nearly 90% of cases, but there have been others confirmed in five provinces including one of Congo’s largest cities, Kisangani, and in neighboring Uganda.Here is what to know about the outbreak:Outbreak is spreading despite signs of slowingWhile Congolese officials say the sharp rise in cases appears to be slowing, they caution the outbreak has not yet peaked. The latest report by the country’s public ‌health ⁠institute says transmission remains sustained, with recent fluctuations in cases likely influenced by reporting delays and ongoing data consolidation.