| Fecund | Epidemic name reference | Years of occurrence | Approximated deaths |
| 01 | Plague of Justinian | 541 to 542 | 100,000,000 | 02 | Black Plague | 1346 to 1350 | 50,000,000 | 03 | HIV/AIDS (human immunodeficiency virus) | 1960 to present | 39,000,000+ | 04 | 1918 Flu (Spanish Flu) | 1918 to 1920 | 20,000,000 | 05 | Modern Plague | 1894 to 1903 | 10,000,000 | 06 | Asian Flu | 1957 to 1958 | 2,000,000 | 07 | Sixth Cholera Pandemic | 1899 to 1923 | 1,500,000 | 08 | Russian Flu | 1889 to 1890 | 1,000,000 | 09 | Hong Kong Flu | 1968 to 1969 | 1,000,000 | 10 | Fifth Cholera Pandemic | 1881 to 1896 | 981,899 | 11 | Ebola | 1976 to 2015 | 13, 562+ | 12 | 2020: COVID-19 | 2019 to present | 3,375,573+ (as May 18, 2021) |
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