EPIDEMIOLOGY OF POLIOMYELITIS
نویسندگان
چکیده
منابع مشابه
Poliomyelitis: its epidemiology and prophylaxis.
IN the history of poliomyelitis we have the story of a disease undergoing a series of transitions with a pattern of evolution which has passed through at least three stages: first, the protracted era of old-fashioned "infantile paralysis," then the terrifying stage of epidemic ccpolio," and finally the present stage, in which paralytic poliomyelitis currently seems to be coming under cont~ol th...
متن کاملEpidemiology of Poliomyelitis and Allied Diseases, 1963 †**
A striking feature of paralytic poliomyelitis has been its ever changing epidemiology. In the past, changes seem to have come about in the course of natural evolution from an endemic to an epidemic pattern, first in one part of the world, and then in another. At present, the use of effective vaccines for prevention and for greatly reducing circulation of wild strains of the virus, have apparent...
متن کاملA Contribution to the Epidemiology of Poliomyelitis
A strain of the poliomyelitic virus was propagated in monkeys for four years, during which time it displayed three distinct phases of virulence. The several phases covered different periods of time. At the outset the virulence was low, but by animal passages it quickly rose to a maximum; this maximum was maintained for about three years, when, without known changes in the external conditions, a...
متن کاملEpidemiology of poliomyelitis in northwestern Ethiopia.
OBJECTIVES To determine the magnitude of poliomyelitis and assess its epidemiological features. DESIGN A cross-sectional community based, house-to-house survey. SETTING Six urban and ten rural villages in Gondar Zuria district, north-western Ethiopia. SUBJECTS Twelve thousand children aged 1-15 years residing in the randomly selected areas were enrolled in the study to identify children w...
متن کاملHistorical and Geographical Aspects of the Epidemiology of Poliomyelitis *
Some of us who have been concerned with the epidemiology of poliomyelitis for a decade or more have finally come to realize that the behavior of this disease differs in different places and has differed in different times. Prior to this realization vain attempts had been made to make this disease conform in its behavior to a universal pattern, which could be presented as simple truths in a conc...
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ژورنال
عنوان ژورنال: The Lancet
سال: 1950
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(50)90763-x