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Feb 19, 2021 · What is an Epidemic? The Centers for Disease Control and Prevention (CDC) describes an epidemic as an unexpected increase in the number of disease cases in a specific geographical area. Yellow fever, smallpox, measles, and polio are prime examples of epidemics. An epidemic disease doesn't necessarily have to be contagious.
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.
The COVID-19 pandemic (also known as the coronavirus pandemic ), caused by severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2 ), began with an outbreak in Wuhan, China, in December 2019. It spread to other areas of Asia, and then worldwide in early 2020.
Explore our data on COVID-19 testing to see how confirmed cases compare to actual infections. See data on how many people are being hospitalized for COVID-19. See how government policy responses – on travel, testing, vaccinations, face coverings, and more – vary across the world.
- Hannah Ritchie, Edouard Mathieu, Lucas Rodés-Guirao, Cameron Appel, Charlie Giattino, Esteban Ortiz-...
- 2020
Mar 17, 2021 · The coronavirus, which surfaced in a Chinese seafood and poultry market in December 2019, has spread to nearly every country, upending life and derailing the global economy. The virus has killed ...
Aug 6, 2021 · Global epidemic events, that is, plague, influenza, coronaviruses have been evolving from deadly human pathogens. •. Most of the emerging pathogens are of “zoonotic” or animal origin. •. Practicing nonpharmacological interventions is an effective weapon in fighting against an epidemic. •.
Epidemic, an occurrence of disease that is temporarily of high prevalence. An epidemic occurring over a wide geographical area (e.g., worldwide) is called a pandemic. The rise and decline in epidemic prevalence of an infectious disease is a probability phenomenon dependent upon transfer of an.
