The US Centers for Disease Control and Prevention issued a health alert about an outbreak in Uganda of deadly Sudan virus disease, a viral hemorrhagic fever that is in the same family as Ebola.

The U.S. Centers for Disease Control and Prevention on Thursday warned doctors and other healthcare workers about an outbreak of Ebola cases in Uganda.

Uganda has launched a trial of a vaccine against the Sudan strain of the Ebola virus, following an outbreak in the country with three confirmed cases.The first patient, a 32-year-old male nurse, died last week.

Confirmation of Ebola Sudan in Uganda poses a high risk of further spread owing to the index patient's movements across multiple districts and healthcare facilities, the WHO said. It added that rapid containment is critical, because of Kampala's dense population and Mbale's location near the border with Kenya.

U.S. health officials are telling Americans to take precautions if they travel to Uganda because of an Ebola outbreak

U.S. health officials advise Americans traveling to Uganda to take enhanced precautions due to an Ebola outbreak