The World Health Organization says the current Ebola outbreak in the Democratic Republic of Congo likely began months before it was confirmed and is expected to continue expanding. WHO experts estimate the virus has been circulating for about two months, suggesting the first detected case and subsequent deaths may reflect an earlier phase of transmission that was not immediately identified.

Both reports describe the early spread as potentially driven by a “super-spreader” event, in which one source leads to many new infections. WHO specialists attribute this pattern to either a funeral or a healthcare setting, where close contact can increase transmission risk.

The reports also emphasize that, because the outbreak may have been under way for some time, case numbers could rise as more infections are detected and investigations continue. WHO’s assessment is presented as a warning based on epidemiological analysis of the outbreak’s timing and transmission dynamics rather than on any single confirmed circumstance.