An Ebola outbreak in the Democratic Republic of Congo's been declared a 'international emergency'.
The World Health Organisation says the death of a pastor in Goma, which is home to 1.5 million people has led to the heightened threat level.
Experts say it would be extremely difficult to control an outbreak of Ebola in a place like Goma, and the upgraded crisis status should see more specialists and resources arrive to combat the virus.
Some 1,650 people have lost their lives in the country over the past year as officials struggle to contain the virus.
WHO Director-General Dr Tedros Adhanom Ghebreyesus says: "It is time for the world to take notice and redouble our efforts.
"We need to work together in solidarity with the DRC to end this outbreak and build a better health system.
"Extraordinary work has been done for almost a year under the most difficult circumstances.
"We all owe it to these responders - coming from not just WHO but also government, partners and communities - to shoulder more of the burden."
"This is about mothers, fathers and children - too often entire families are stricken.
"At the heart of this are communities and individual tragedies", Dr Ghebreyesus adds.