The BBC reports that an outbreak of the Ebola virus has killed 13 in Uganda, and infected seven more. "The health ministry says emergency measures are in place to deal with the outbreak, which began in late June but has only just been confirmed as Ebola. The cases have been reported in Kibaale district, about 170km (100 miles) to the west of the capital Kampala. ... Ebola is one of the most virulent diseases in the world. It is spread by close personal contact, and kills up to 90% of those who become infected. There is no vaccine for the virus. Symptoms include sudden onset of fever, weakness, headache, vomiting and impaired kidneys. The first victim of this outbreak was a pregnant woman."