The World Health Organization says the fastest-growing Ebola outbreak started in February, months before it was officially declared in May. The WHO regional director says early cases were wrongly attributed to malaria and typhoid. Confirmed cases have reached 4,200, with over 1,900 deaths. The Bundibugyo virus responsible for this outbreak has no approved vaccines or treatments. WHO chief Tedros Adhanom Ghebreyesus has warned that Ebola is spreading faster than efforts to fight it. Access to healthcare is challenged by years of conflict in one of Congo’s most remote areas.