| D003141 |
Communicable Diseases |
An illness caused by an infectious agent or its toxins that occurs through the direct or indirect transmission of the infectious agent or its products from an infected individual or via an animal, vector or the inanimate environment to a susceptible animal or human host. |
Infectious Diseases,Communicable Disease,Disease, Communicable,Disease, Infectious,Diseases, Communicable,Diseases, Infectious,Infectious Disease |
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| D004196 |
Disease Outbreaks |
Sudden increase in the incidence of a disease. The concept includes EPIDEMICS and PANDEMICS. |
Outbreaks,Infectious Disease Outbreaks,Disease Outbreak,Disease Outbreak, Infectious,Disease Outbreaks, Infectious,Infectious Disease Outbreak,Outbreak, Disease,Outbreak, Infectious Disease,Outbreaks, Disease,Outbreaks, Infectious Disease |
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| D004463 |
Ecology |
The branch of science concerned with the interrelationship of organisms and their ENVIRONMENT, especially as manifested by natural cycles and rhythms, community development and structure, interactions between different kinds of organisms, geographic distributions, and population alterations. (Webster's, 3d ed) |
Bionomics,Ecologies |
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| D004813 |
Epidemiology |
Field concerned with the determination of causes, incidence, and characteristic behavior of disease outbreaks affecting human populations. It includes the interrelationships of host, agent, and environment as related to the distribution and control of disease. |
Social Epidemiology,Epidemiologies, Social,Epidemiology, Social,Social Epidemiologies |
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| D006801 |
Humans |
Members of the species Homo sapiens. |
Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man |
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| D014586 |
USSR |
A country located from the Baltic and Black seas to the Pacific Ocean and, for a time including 15 Soviet Socialist Republics. The capital was Moscow. |
Soviet Union,Union of Soviet Socialist Republics |
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| D049672 |
History, 19th Century |
Time period from 1801 through 1900 of the common era. |
19th Century History,19th Cent. History (Medicine),19th Cent. History of Medicine,19th Cent. Medicine,Historical Events, 19th Century,History of Medicine, 19th Cent.,History, Nineteenth Century,Medical History, 19th Cent.,Medicine, 19th Cent.,19th Cent. Histories (Medicine),19th Century Histories,Cent. Histories, 19th (Medicine),Cent. History, 19th (Medicine),Century Histories, 19th,Century Histories, Nineteenth,Century History, 19th,Century History, Nineteenth,Histories, 19th Cent. (Medicine),Histories, 19th Century,Histories, Nineteenth Century,History, 19th Cent. (Medicine),Nineteenth Century Histories,Nineteenth Century History |
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| D049673 |
History, 20th Century |
Time period from 1901 through 2000 of the common era. |
20th Century History,20th Cent. History (Medicine),20th Cent. History of Medicine,20th Cent. Medicine,Historical Events, 20th Century,History of Medicine, 20th Cent.,History, Twentieth Century,Medical History, 20th Cent.,Medicine, 20th Cent.,20th Cent. Histories (Medicine),20th Century Histories,Cent. Histories, 20th (Medicine),Cent. History, 20th (Medicine),Century Histories, 20th,Century Histories, Twentieth,Century History, 20th,Century History, Twentieth,Histories, 20th Cent. (Medicine),Histories, 20th Century,Histories, Twentieth Century,History, 20th Cent. (Medicine),Twentieth Century Histories,Twentieth Century History |
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