Uganda's Ebola virus caseload has risen to 12, up from 10, with two people who died early last month being considered probable cases, the World Health Organization said on Wednesday.

An investigation into Uganda's latest Ebola Sudan patient, a 4-year-old boy who recently died, revealed that his mother and newborn sibling died a few weeks earlier from likely Ebola virus infections, the World Health Organization (WHO) African regional office said in its weekly health emergencies update.

Uganda has reported the second death of a child from Ebola and concerns raised over disease surveillance in the outbreak. A second Ebola patient, a 4-year-old child, has died in Uganda, the World Health Organization said,

The United Nations has launched an emergency appeal to raise $11.2 million to help fund Uganda's response to an Ebola outbreak that has killed two people, after the country's health budget was strained by U.