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  2. List of epidemics and pandemics - Wikipedia

    en.wikipedia.org/wiki/List_of_epidemics_and...

    1918–1922 Russia typhus epidemic: Typhus: 23 million 1–1.6% of Russian population [14] 1918–1922 Russia: 13 Cocoliztli epidemic of 1576: Cocoliztli 22.5 million 50% of Mexican population [12] 1576–1580 Mexico 14 1772–1773 Persian Plague: Bubonic plague 2 million – 1772–1773 Persia: 15 735–737 Japanese smallpox epidemic ...

  3. Epidemic - Wikipedia

    en.wikipedia.org/wiki/Epidemic

    An epidemic (from Greek ἐπί epi "upon or above" and δῆμος demos "people") is the rapid spread of disease to a large number of hosts in a given population within a short period of time. For example, in meningococcal infections , an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered an epidemic.

  4. Attack rate - Wikipedia

    en.wikipedia.org/wiki/Attack_rate

    It is used in hypothetical predictions and during actual outbreaks of disease. An at-risk population is defined as one that has no immunity to the attacking pathogen, which can be either a novel pathogen or an established pathogen. It is used to project the number of infections to expect during an epidemic. This aids in marshalling resources ...

  5. Mathematical modelling of infectious diseases - Wikipedia

    en.wikipedia.org/wiki/Mathematical_modelling_of...

    For example, smallpox eradication, with the last wild case in 1977, and certification of the eradication of indigenous transmission of 2 of the 3 types of wild poliovirus (type 2 in 2015, after the last reported case in 1999, and type 3 in 2019, after the last reported case in 2012). [28] The herd immunity level will be denoted q.

  6. Disease outbreak - Wikipedia

    en.wikipedia.org/wiki/Disease_outbreak

    Difference between outbreak, endemic, epidemic and pandemic. In epidemiology, an outbreak is a sudden increase in occurrences of a disease when cases are in excess of normal expectancy for the location or season. It may affect a small and localized group or impact upon thousands of people across an entire continent.

  7. Puerto Rico reports dengue fever epidemic. How likely is the ...

    www.aol.com/puerto-rico-reports-dengue-fever...

    Dengue fever is on the rise in Puerto Rico, and island officials have declared it an epidemic. At least 549 cases have been reported so far and more than 340 people have been hospitalized ...

  8. Epidemiology of obesity - Wikipedia

    en.wikipedia.org/wiki/Epidemiology_of_obesity

    Obesity has been observed throughout human history. Many early depictions of the human form in art and sculpture appear obese. [2] However, it was not until the 20th century that obesity became common — so much so that, in 1997, the World Health Organization (WHO) formally recognized obesity as a global epidemic [3] and estimated that the worldwide prevalence of obesity has nearly tripled ...

  9. Lyme disease is ‘almost epidemic’ in parts of NC. What you ...

    www.aol.com/lyme-disease-almost-epidemic-parts...

    Wake is among 13 counties reporting from 2 to 3.9 cases per 100,000 people. Twenty counties in the state, including Orange and Johnston , reported 0.1 to 1.9 cases per 100,000.