The first outbreaks of Ebola (also known as Ebola haemorrhagic fever) have occurred in isolated villages in central Africa, near tropical forests, but the recent outbreak in West Africa has affected major urban centers as well as rural areas. The Ebola virus disease shows an average fatality rate about 50%. In previous outbreaks, the rate went from 20% to 90%. The virus is transmitted to humans from wild animals and then spreads in populations by human transmission. Early care support focused on rehydration and symptomatic treatment improves survival rates. No approved treatment has yet demonstrated its ability to neutralize the virus, but several treatments (immunotherapies or drug) are under consideration. There is currently no vaccine approved against Ebola, but several candidates are being evaluated. The outbreak of Ebola Guinea which started late December 2013 has 4,922 deaths recorded among the 13,703 cases, according to the latest WHO report dated October 29th, 2014. Ebola is leading to one of major health crisis of the 21st century, which is mentioned in all major media around the World.
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