![]() ![]() This syndrome is usually caused by RNA viruses of the families Flaviviridae, Filoviridae, Arenaviridae and Bunyaviridae ( 4, 5). The term viral hemorrhagic fever refers to a variety of viral diseases characterized by bleeding and fever in humans. It includes five species of Ebola and a strain of Marburg virus, which cause hemorrhagic fever in humans and also in nonhuman primates. Ebola is an enveloped virus that belongs to the family Filoviridae. ![]() The ongoing multinational Ebola outbreak posed a serious threat to the countries of West Africa and beyond due to its unprecedented magnitude. Unpredictable hemorrhagic fever disease outbreaks are caused by different species of Ebola viruses, as well as Marburg virus associated with 90% fatality rates ( 3). IntroductionĪbout 1500 species of infectious organisms are known to be pathogenic to humans, including 217 viruses and prions ( 1, 2). ![]() Scientists working in this field should be cooperative and committed to combat this natural disaster effectively.Įbola Virus Reservoirs Hosts Pathogenicity Viral Entry Mechanism Mode of Action Epidemiology Viral Transmission 1. Lethal and infectious nature of this virus requires the effective diagnostic methods. Despite the known severity of Ebola outbreaks, no effective vaccine or therapeutic drug is developed so far because of the RNA coded nature of this virus, but many candidate vaccines are going on trial basis. ![]()
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