The vaccine is supposed to complement the Merck vaccine which has been administered to 250,000 people since the 2018 Ebola outbreak and will be administered to an additional 50,000.
The motive for the murder in the town of Lwemba in the troubled Ituri region was unknown, but it came as health authorities were set to introduce a new vaccine against the disease in unaffected areas.
The ongoing Ebola outbreak is the second-worst one in history after more than 11,000 people were killed in Guinea, Sierra Leone and Liberia between 2014 and 2016.
The United Nations health agency says it was made aware of the death of a patient suspected to have Ebola as well as of an Ebola test that had come back positive.
The Democratic Republic of Congo's health ministry says that among 3,128 cases of reported hemorrhagic fever, some 3,017 were confirmed to be Ebola cases.
When Edmund Kaszibuloh Koroma emerged from the jungle, leading 87 former child soldiers and sex slaves to safety, he became a hero. But he believes it is his duty to support Sierra Leone’s youth.
The latest casualty in Uganda was a nine-year-old girl from the DRC, reviving fears that the virus could cross the porous borders of the central African country.
More than 1,800 people have died in eastern Democratic Republic of Congo since Ebola broke out there in August last year.
Rwanda's health minister came out with a clarification after the country's foreign affairs state minister had said that the border with DRC was shut over increased fears that the Ebolo virus could spread across the border.
"I have been informed of another confirmed Ebola case at the Goma Ebola treatment centre," said Aruna Abedi, the chief Ebola coordinator in North Kivu, the worst-hit province since the outbreak began on August 1 last year.
In any country in the world, the resignation of the health minister days after the declaration of an international health emergency should not only be worrying but alarming.
The WHO says the renewed pledges of financial aid raised hopes the Ebola epidemic could be restrained after the outbreak was declared an international emergency earlier this month.
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