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For a given epidemic or pandemic, the average of its estimated death toll range is used for ranking. If the death toll averages of two or more epidemics or pandemics are equal, then the smaller the range, the higher the rank. For the historical records of major changes in the world population, see world population. [3]
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
The COVID-19 pandemic was the third leading cause of death globally in 2020 and the second in 2021, according to a recent World Health Organization report.The almost 13 million lives lost during ...
This is a list of all virus species, including satellites and viroids. Excluded are other ranks, and other non-cellular life such as prions. Also excluded are common names and obsolete names for viruses. The taxonomy is taken from ICTV taxonomy 2022 release [1] For a list of virus families and subfamilies, see List of virus families and ...
The first confirmed human case in the United States was on 19 January 2020. The World Health Organization declared the COVID-19 outbreak a Public Health Emergency of International Concern (PHEIC) on 30 January 2020, and first referred to it as a pandemic on 11 March 2020. [3] [4] The WHO ended the PHEIC on 5 May 2023. [5]
On 18 December 2020—early on in the risk assessment of the variant—the UK scientific advisory body New and Emerging Respiratory Virus Threats Advisory Group (NERVTAG) concluded that they had moderate confidence that VOC-202012/01 was substantially more transmissible than other variants, but that there were insufficient data to reach any ...
A lot has changed since SARS-CoV-2 (the virus responsible for COVID-19) appeared on the world stage four years ago.In 2020, the novel coronavirus infected and upended the daily lives of millions ...
October: Ghostball, the first multipartite virus, is discovered by Friðrik Skúlason. It infects both executable .COM files and boot sectors on MS-DOS systems. December: Several thousand floppy disks containing the AIDS Trojan, the first known ransomware, are mailed to subscribers of PC Business World magazine and a WHO AIDS conference mailing ...