What's the difference between epidemiology and pathogenesis?

Epidemiology


Definition:

  • (n.) That branch of science which treats of epidemics.

Example Sentences:

  • (1) Consensual but rationally weak criteria devised to extract inferences of causality from such results confirm the generic inadequacy of epidemiology in this area, and are unable to provide definitive scientific support to the perceived mandate for public health action.
  • (2) The epidemiology of HIV infection among women and hence among children has progressively changed since the onset of the epidemic in Western countries.
  • (3) Subtypes of HBs Ag are already of great use in the epidemiology of hepatitis B virus infections; yet they may have additional significance.
  • (4) Because of the dearth of epidemiological clues as to causation, studies with experimental animal models assume greater importance.
  • (5) Epidemiological studies on low risks involve a number of major methodological difficulties.
  • (6) The purpose of this paper is to discuss the potential for integrating surveillance techniques in reproductive epidemiology with geographic information system technology in order to identify populations at risk around hazardous waste sites.
  • (7) The clinical and epidemiological aspects of these 35 cases are discussed.
  • (8) We present a mathematical model that is suitable to reconcile this apparent contradiction in the interpretation of the epidemiological data: the observed parallel time series for the spread of AIDS in groups with different risk of infection can be realized by computer simulation, if one assumes that the outbreak of full-blown AIDS only occurs if HIV and a certain infectious coagent (cofactor) CO are present.
  • (9) Schistosomal obstructive uropathy was studied by clinical, laboratory epidemiologic and pathologic analysis in 155 Egyptian patients treated surgically.
  • (10) The epidemiological effectiveness of dipyridamol, an interferon-inducing agent used for the prevention of influenza and viral acute respiratory diseases, was tested in 4 epidemiological trials, 3 of them carried out as double blind trials.
  • (11) Studies of diarrhoeal disease have been limited mainly to descriptive epidemiological investigations.
  • (12) This preliminary study estimates the occurrence of concurrent helminth infection in Africa and Brazil to determine whether such an approach is justified epidemiologically.
  • (13) This method can characterize reliably flavivirus field isolates at the molecular level without extensive virus propagation and molecular cloning, and will be a valuable tool for molecular epidemiological studies.
  • (14) In this series, the association between the anomalous ductal insertion and biliary tract disease cannot be established, since the method of patient selection obviates any epidemiologic consideration.
  • (15) This may help explain the poor correlation of low-back pain with radiographic degenerative changes reported in previous epidemiologic studies.
  • (16) Nevertheless, they are still being widely used, since in most cases only the epidemiology of the disease points to the etiologic role of A. cantonensis.
  • (17) However, the epidemiology and clinical course of AIDS are different in Africa and in the West.
  • (18) The author formulates possible approaches to the solution of the information problem in epidemiology.
  • (19) As yet there is no evidence that the occurrence of savanna flies in the rain forest zone of Liberia was of epidemiological significance.
  • (20) A 12-month epidemiological survey of attacks of acute myocardial infarction was carried out in a large urban population.

Pathogenesis


Definition:

  • (n.) Pathogeny.

Example Sentences:

  • (1) The combined analysis of pathogenesis and genetics associated with the salmonella virulence plasmids may identify new systems of bacterial virulence and the genetic basis for this virulence.
  • (2) Although antihistamines are widely used for symptomatic treatment of seasonal (allergic) rhinitis, the role of histamines in the pathogenesis of infectious rhinitis is not clear.
  • (3) In concert with TF expressed by monocytes and macrophages this endothelial cell procoagulant activity may play a role in the pathogenesis of thrombotic disease.
  • (4) Escherichia enterotoxigenic strains, Yersinia enterocolitica and Salmonella typhimurium virulent strains, Campylobacter jejuni clinical isolates possess more pronounced capacity for adhesion to enteric cells of Peyer's plaques than to other types of epithelial cells, which may be of importance in the pathogenesis of these infections.
  • (5) Functional as well as mechanical factors may be important in the pathogenesis of cholestatic syndromes.
  • (6) Its pathogenesis, still incompletely elucidated, involves the precipitation of immune complexes in the walls of the all vessels.
  • (7) The authors describe the role played by these substances in the pathogenesis of inflammations, their importance in the regulation of intraocular pressure and in the development of cystoid macular oedema.
  • (8) With the aim of evaluating the role of 1,25 dihydroxyvitamin D in the pathogenesis of osteoporosis, this hormone was studied in 90 subjects.
  • (9) The findings suggest that mast cell prostaglandins are an important factor in the pathogenesis of pruritus and that local vascular responses may trigger mast cell degranulation.
  • (10) The development of pulmonary edema in high-altitude residents with upper respiratory infections and no antecedent low-altitude journey is consistent with the presence of other factors such as inflammation, which may play a role in the pathogenesis of the edema.
  • (11) Although not common, the disorder is the most frequently diagnosed disturbance of porphyrin metabolism in many countries, and further insight into its unusual pathogenesis may clarify the hepatotoxic effects of the 4 etiologic agents.
  • (12) Proliferation of untransformed FDC-PI cells and the emergence of variants with improved adaptation to in vivo conditions appear to be important and possibly necessary steps in the pathogenesis of the disease.
  • (13) These results may suggest that liver subcellular component is involved in pathogenesis of drug-induced allergic hepatitis.
  • (14) Our findings suggest that the affinity of aldose reductase for glucose in patients with diabetic complications may be increased and that the polyol pathway is implicated in the pathogenesis of diabetic complications.
  • (15) Pathogenesis of acute osteomyelitis is analyzed from the standpoint of disorders in the bone microcirculation.
  • (16) Taken together with recent data from transgenic animals, this in vitro observation has possible implications for our view of the pathogenesis of pancreatic neoplasia.
  • (17) In the discussion, some of the theories of the pathogenesis of clubbing are reviewed, together with previous reports of clubbing in gastro-oesophageal disorders.
  • (18) Antigenic mimicry by T. cruzi antigens sharing epitopes with host macromolecules has been implicated in the pathogenesis which is thought to have a significant autoimmune component.
  • (19) Further studies are required to show whether these differences are real and, if so, whether they have any relevance for the pathogenesis of migraine attacks.
  • (20) The evidence suggests that this isozyme is not necessary for soft-rot pathogenesis.