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Specialty: Hematology and oncology: Symptoms: Bleeding, bruising, fatigue, fever, increased risk of infections [2] Usual onset: All ages, [3] most common in 60s and 70s. [4] It is the most common malignant cancer in children, but the cure rates are also higher for them.
In epidemiology, a risk factor or determinant is a variable associated with an increased risk of disease or infection. [ 1 ] : 38 Due to a lack of harmonization across disciplines, determinant , in its more widely accepted scientific meaning , is often used as a synonym.
Epidemiology has its limits at the point where an inference is made that the relationship between an agent and a disease is causal (general causation) and where the magnitude of excess risk attributed to the agent has been determined; that is, epidemiology addresses whether an agent can cause disease, not whether an agent did cause a specific ...
In epidemiology, case fatality rate (CFR) – or sometimes more accurately case-fatality risk – is the proportion of people who have been diagnosed with a certain disease and end up dying of it. Unlike a disease's mortality rate, the CFR does not take into account the time period between disease onset and death. A CFR is generally expressed ...
The 6 pillars of lifestyle medicine.. Diet and lifestyle are major factors thought to influence susceptibility to many diseases. Substance use disorders, such as tobacco smoking, and excessive consumption of alcohol, and a lack of or too much exercise may also increase the risk of developing certain diseases, especially later in life.
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 ...
Being female is the single greatest risk factor for developing autoimmune disease than any other genetic or environmental risk factor yet discovered. [ 23 ] [ 24 ] Autoimmune conditions overrepresented in women include: lupus , primary biliary cholangitis , Graves' disease , Hashimoto's thyroiditis , and multiple sclerosis , among many others.
By convention, a communicable disease outbreak is declared over when a period of twice the incubation period of the infectious disease has elapsed without identification of any new case, however, for organisms with a short incubation period (e.g. fewer than ten days), a period of three times the incubation period is preferred. [11]