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For example, in developed countries, shigellosis (bacillary dysentery) is normally considered a sporadic disease, but in overcrowded places with poor sanitation and poor personal hygiene, it may become epidemic. Shigellosis was a sporadic disease in South Korea for many years, until 1998.
Widespread non-communicable diseases such as cardiovascular disease and cancer are not included. 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 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.
Also known as chronic wasting disease, "zombie deer disease" is a prion disease, a rare, progressive and fatal neurodegenerative disorder that affects deer, elk, moose and other animals, the CDC says.
The Plague of Athens (c. 1652 –1654) by Michiel Sweerts, illustrating the devastating epidemic that struck Athens in 430 BC, as described by the historian Thucydides. The United States Centers for Disease Control and Prevention defines epidemic broadly: "Epidemic refers to an increase, often sudden, in the number of cases of a disease above what is normally expected in that population in ...
An idiopathic disease is any disease with an unknown cause or mechanism of apparent spontaneous origin. [ 1 ] For some medical conditions, one or more causes are somewhat understood, but in a certain percentage of people with the condition, the cause may not be readily apparent or characterized.
Inclusion body myositis (IBM) (/ m aɪ oʊ ˈ s aɪ t ɪ s /) (sometimes called sporadic inclusion body myositis, sIBM) is the most common inflammatory muscle disease in older adults. [2] The disease is characterized by slowly progressive weakness and wasting of both proximal muscles (located on or close to the torso ) and distal muscles (close ...
For example, it’s clear that pulling back from America’s good works across the globe in the name of cutting a small fraction of its annual spending will cost the U.S. more in the long term and ...