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Disease Death toll Percentage of population lost Years Location 2 1918 Flu: Influenza A/H1N1: 17–100 million 1–5.4% of global population [4] 1918–1920 Worldwide 2 Plague of Justinian: Bubonic plague 15–100 million 25–60% of European population [5] 541–549 North Africa, Europe, and Western Asia 3 HIV/AIDS pandemic: HIV/AIDS
Madagascar's plant-based "cure" called COVID-19 Organics is being pushed despite warnings from the World Health Organization that its efficacy is unproven. Tanzania, Equatorial Guinea, Central African Republic, the Republic of Congo, the Democratic Republic of Congo, Liberia, and Guinea Bissau have all already received thousands of doses of ...
The Africa Centres for Disease Control and Prevention, World Health Organization and COVID-19 Africa Open Data Project [271] have collected and reported continent-wide data on the number of cases, recoveries and deaths. The COVID-19 Africa Open Data Project provides additional data on healthcare workers infected, health services, urgent needs ...
Coronavirus diseases are caused by viruses in the coronavirus subfamily, a group of related RNA viruses that cause diseases in mammals and birds. In humans and birds, the group of viruses cause respiratory tract infections that can range from mild to lethal.
In late December 2019, SARS-CoV-2, a coronavirus in the same genus as the one that caused SARS, was discovered in Wuhan, Hubei, China. This strain causes COVID-19, which spread to other areas of Asia, and then worldwide in early 2020, marking the start of the COVID-19 pandemic. [5] [6]
The virus appears to have originated in bats. [32] The virus itself has been isolated from a bat. [33] This virus is closely related to the Tylonycteris bat coronavirus HKU4 and Pipistrellus bat coronavirus HKU5. [34] Serological evidence shows that these viruses have infected camels for at least 20 years.
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.
There are more than 500 species of arboviruses, but in the 1930s only three were known to cause disease in humans: yellow fever virus, dengue virus and Pappataci fever virus. [202] More than 100 of such viruses are now known to cause human diseases including encephalitis. [203] Yellow fever is the most notorious disease caused by a flavivirus ...