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Leukopenia (from Greek λευκός (leukos) 'white' and πενία (penia) 'deficiency') is a decrease in the number of leukocytes (WBC). Found in the blood, they are the white blood cells, and are the body's primary defense against an infection. Thus the condition of leukopenia places individuals at increased risk of infection.
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Neutropenia – a type of leukopenia, with a specific deficiency in neutrophils [2] Thrombocytopenia – a deficiency of platelets; Pancytopenia – when all three types of blood cells; red blood cells, white blood cells, and platelets, are all deficient. This is a life-threatening disorder that is a characteristic of aplastic anemia. [3]
This is a list of countries by risk of premature death from non-communicable disease such as cardiovascular disease, cancer, diabetes, or chronic respiratory disease between ages 30 and 70 as published by the World Health Organization in 2008. Measuring the risk of dying from target NCDs is important to assess the extent of burden from ...
Diseases and disorders VACTERL-H Vertebral abnormalities, Anal atresia, Cardiac defects, Tracheoesophageal fistula, Esophageal atresia, Renal and radial abnormalities, Limb abnormalities with Hydrocephalus
Most are non-infectious, although there are some non-communicable infectious diseases, such as parasitic diseases in which the parasite's life cycle does not include direct host-to-host transmission. The four main NCDs that are the leading causes of death globally are cardiovascular disease , cancer , chronic respiratory diseases , and diabetes .
Since opportunistic infections can cause severe disease, much emphasis is placed on measures to prevent infection. Such a strategy usually includes restoration of the immune system as soon as possible, avoiding exposures to infectious agents, and using antimicrobial medications ("prophylactic medications") directed against specific infections. [50]
Agranulocytosis, also known as agranulosis or granulopenia, is an acute condition involving a severe and dangerous lowered white blood cell count (leukopenia, most commonly of neutrophils) and thus causing neutropenia in the circulating blood. [1] It is a severe lack of one major class of infection-fighting white blood cells.