The World Health Organization says there have been 36 Ebola cases in Uganda – 18 confirmed and 18 probable cases – since an outbreak was declared last week.
It said 23 deaths had occurred in three districts of central Uganda, of which five were confirmed cases.
The WHO said this was the first Ebola outbreak in Uganda since 2012 caused by the Sudan strain of the disease, for which there are no licensed vaccines.
The outbreak began in the central district of Mubende but has now spread to two neighbouring districts of Kyegegwa and Kassanda.
This is the fourth Ebola outbreak Uganda has faced. Past outbreaks have occurred in Uganda in 2000, 2007, 2011, 2012.
The largest documented outbreak occurred in 2000–2001 in Gulu District, registering 425 cases and 224 deaths.
The virus is transmitted to people from wild animals and spreads in the human population through human-to-human transmission.
The case of the relatively rare Sudan strain was confirmed by the Virus Research Institute. Uganda last reported an outbreak of the strain in 2012.