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Yellow fever originated in Africa and the virus was brought to the Americas on cargo ships, which were harbouring the Aedes aegypti mosquito that carries the virus. The first recorded epidemic in Africa occurred in Ghana, in West Africa, in 1926. [206] In the 1930s the disease re-emerged in Brazil.
Widespread non-communicable diseases such as cardiovascular disease and cancer are not included. An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections , an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered ...
Mokola lyssavirus, commonly called Mokola virus (MOKV), is an RNA virus related to rabies virus that has been sporadically isolated from mammals across sub-Saharan Africa. The majority of isolates have come from domestic cats exhibiting symptoms characteristically associated to rabies virus infection.
Earlier this week, the Africa Centers for Disease Control and Prevention announced that the mpox outbreaks were a public health emergency, with more than 500 deaths, and called for international ...
Rwanda is battling its first-ever outbreak of the deadly Marburg virus, with 36 cases reported so far and 11 deaths. The World Health Organization said this week the risk of the outbreak is very ...
The change allows the virus to use the Asian tiger mosquito (an invasive species) as a vector in addition to the more strictly tropical main vector, Aedes aegypti. [65] Enhanced transmission of Chikungunya virus by A. albopictus could mean an increased risk for outbreaks in other areas where the Asian tiger mosquito is present. [66]
Zaire ebolavirus, more commonly known as Ebola virus (/ i ˈ b oʊ l ə, ɪ-/; EBOV), is one of six known species within the genus Ebolavirus. [1] Four of the six known ebolaviruses, including EBOV, cause a severe and often fatal hemorrhagic fever in humans and other mammals, known as Ebola virus disease (EVD).
Of the four disease-causing viruses in the genus Ebolavirus, Ebola virus (or the Zaire Ebola virus) is dangerous and is the virus responsible for the epidemic in Western Africa. [ 236 ] [ 237 ] Since the discovery of the viruses in 1976, Ebola virus disease has been confined to areas in Middle Africa, where it is native.