The 2023 Tanzania Marburg virus disease outbreak lasted from March until June.
[2] While there had not been an outbreak in Tanzania, the virus had been identified in neighboring countries and the reservoir, the Egyptian fruit bat, is known to be present there.
[4] The cases were later confirmed as Marburg virus infection and announced as an outbreak on 21 March 2023.
The cases had all been in the Bukoba district of Kagera Region and appeared to be epidemiologically linked.
[5][6] Per an 8 May 2023 press release from the World Health Organization, three patients recovered and six died; cases ranged in age from 1 to 59 years old (median 35-year-old), and two cases were among healthcare workers (one of which died).