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An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections, an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered an epidemic. [1]
An endemic disease always has a steady, predictable number of people getting sick, but that number can be high (hyperendemic) or low (hypoendemic), and the disease can be severe or mild. [3] [4] Also, a disease that is usually endemic can become epidemic. [3] For example, chickenpox is endemic in the United Kingdom, but malaria is not.
This is an accepted version of this page This is the latest accepted revision, reviewed on 3 January 2025. Theoretical future stage of COVID-19 Part of a series on the COVID-19 pandemic Scientifically accurate atomic model of the external structure of SARS-CoV-2. Each "ball" is an atom. COVID-19 (disease) SARS-CoV-2 (virus) Cases Deaths Timeline 2019 2020 January responses February responses ...
The World Health Organization declared the novel coronavirus disease a pandemic, with severe repercussions to human health and global economic activity. While WHO officials say the COVID-19 ...
Epidemic typhus, also known as louse-borne typhus, is a form of typhus so named because the disease often causes epidemics following wars and natural disasters where civil life is disrupted. Epidemic typhus is spread to people through contact with infected body lice , in contrast to endemic typhus which is usually transmitted by fleas .
In 2003, researchers discovered the Sars virus infecting patients in Asia. The World Health Organization says a pandemic, is a virus that spreads easily and infects people across the world.
The Centers for Disease Control issued an official Health Alert, the highest category of alert message, on September 14 [22] and started to investigate the E. coli outbreak. The FDA warned consumers about an E. coli outbreak tied to fresh spinach bags. The FDA reported that they received complaints from 19 states in the United States.
The coronavirus is on everyone’s minds. As an epidemiologist, I find it interesting to hear people using technical terms – like quarantine or super spreader or reproductive number – that my ...