Keywords: bookid:practicalstudyo00dead bookidpracticalstudyo00dead bookyear:1909 bookyear1909 bookdecade:1900 bookdecade1900 bookcentury:1900 bookcentury1900 bookauthor:deaderick__william_heiskell__1876_ bookauthordeaderickwilliamheiskell1876 booksubject:malaria booksubjectmalaria bookpublisher:philadelphia_and_london__w__b__saunders_company bookpublisherphiladelphiaandlondonwbsaunderscompany bookcontributor:the_library_of_congress bookcontributorthelibraryofcongress booksponsor:the_library_of_congress booksponsorthelibraryofcongress bookleafnumber:62 bookleafnumber62 bookcollection:library_of_congress bookcollectionlibraryofcongress bookcollection:americana bookcollectionamericana monochrome outdoor bookid:practicalstudyo00dead bookidpracticalstudyo00dead bookyear:1909 bookyear1909 bookdecade:1900 bookdecade1900 bookcentury:1900 bookcentury1900 bookauthor:deaderick__william_heiskell__1876_ bookauthordeaderickwilliamheiskell1876 booksubject:malaria booksubjectmalaria bookpublisher:philadelphia_and_london__w__b__saunders_company bookpublisherphiladelphiaandlondonwbsaunderscompany bookcontributor:the_library_of_congress bookcontributorthelibraryofcongress booksponsor:the_library_of_congress booksponsorthelibraryofcongress bookleafnumber:62 bookleafnumber62 bookcollection:library_of_congress bookcollectionlibraryofcongress bookcollection:americana bookcollectionamericana monochrome outdoor Identifier: practicalstudyo00dead Title: A practical study of malaria Year: 1909 (1900s) Authors: Deaderick, William Heiskell, 1876- Subjects: Malaria Publisher: Philadelphia and London, W. B. Saunders company Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: Fig. 6.—Spleen rate in British Central Africa (after Daniels). only one really accurate method by which we can determinethe degree of malaria in a given locality, and that is by ascer-taining the average time in which a newcomer becomes in-fected. The shorter this period the greater, evidently, the Text Appearing After Image: Fig. 5.—This group shows a high Index endemicus. ETIOLOGY 57 malaria potential of the locality. Native children constitute theclass of newcomers most accessible for making the estimate. The most accurate method of determining the index en-demicus of an area is to make a large number of bloodexaminations of native children at various ages. This requiresa great deal of time. It has been repeatedly shown that inregions where malaria prevails extensively a large per cent.of young children harbor the parasites without manifestingany symptoms of the disease, the index decreasing as theage increases. For this reason young natives with latentmalaria are the source of the greatest danger to the com-munity. Koch78 records the following indices: At Bogadjim: Per Cent. Infected. Children under two years 80.0 Children from two to five years 41.6 Persons over five years At BongU : Per Cent. Infected. Children under two years 100.0 Children from two to five years 46.1 Children from five to ten yea Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. Identifier: practicalstudyo00dead Title: A practical study of malaria Year: 1909 (1900s) Authors: Deaderick, William Heiskell, 1876- Subjects: Malaria Publisher: Philadelphia and London, W. B. Saunders company Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: Fig. 6.—Spleen rate in British Central Africa (after Daniels). only one really accurate method by which we can determinethe degree of malaria in a given locality, and that is by ascer-taining the average time in which a newcomer becomes in-fected. The shorter this period the greater, evidently, the Text Appearing After Image: Fig. 5.—This group shows a high Index endemicus. ETIOLOGY 57 malaria potential of the locality. Native children constitute theclass of newcomers most accessible for making the estimate. The most accurate method of determining the index en-demicus of an area is to make a large number of bloodexaminations of native children at various ages. This requiresa great deal of time. It has been repeatedly shown that inregions where malaria prevails extensively a large per cent.of young children harbor the parasites without manifestingany symptoms of the disease, the index decreasing as theage increases. For this reason young natives with latentmalaria are the source of the greatest danger to the com-munity. Koch78 records the following indices: At Bogadjim: Per Cent. Infected. Children under two years 80.0 Children from two to five years 41.6 Persons over five years At BongU : Per Cent. Infected. Children under two years 100.0 Children from two to five years 46.1 Children from five to ten yea Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. Identifier: practicalstudyo00dead Title: A practical study of malaria Year: 1909 (1900s) Authors: Deaderick, William Heiskell, 1876- Subjects: Malaria Publisher: Philadelphia and London, W. B. Saunders company Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: Fig. 6.—Spleen rate in British Central Africa (after Daniels). only one really accurate method by which we can determinethe degree of malaria in a given locality, and that is by ascer-taining the average time in which a newcomer becomes in-fected. The shorter this period the greater, evidently, the Text Appearing After Image: Fig. 5.—This group shows a high Index endemicus. ETIOLOGY 57 malaria potential of the locality. Native children constitute theclass of newcomers most accessible for making the estimate. The most accurate method of determining the index en-demicus of an area is to make a large number of bloodexaminations of native children at various ages. This requiresa great deal of time. It has been repeatedly shown that inregions where malaria prevails extensively a large per cent.of young children harbor the parasites without manifestingany symptoms of the disease, the index decreasing as theage increases. For this reason young natives with latentmalaria are the source of the greatest danger to the com-munity. Koch78 records the following indices: At Bogadjim: Per Cent. Infected. Children under two years 80.0 Children from two to five years 41.6 Persons over five years At BongU : Per Cent. Infected. Children under two years 100.0 Children from two to five years 46.1 Children from five to ten yea Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. Identifier: practicalstudyo00dead Title: A practical study of malaria Year: 1909 (1900s) Authors: Deaderick, William Heiskell, 1876- Subjects: Malaria Publisher: Philadelphia and London, W. B. Saunders company Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: Fig. 6.—Spleen rate in British Central Africa (after Daniels). only one really accurate method by which we can determinethe degree of malaria in a given locality, and that is by ascer-taining the average time in which a newcomer becomes in-fected. The shorter this period the greater, evidently, the Text Appearing After Image: Fig. 5.—This group shows a high Index endemicus. ETIOLOGY 57 malaria potential of the locality. Native children constitute theclass of newcomers most accessible for making the estimate. The most accurate method of determining the index en-demicus of an area is to make a large number of bloodexaminations of native children at various ages. This requiresa great deal of time. It has been repeatedly shown that inregions where malaria prevails extensively a large per cent.of young children harbor the parasites without manifestingany symptoms of the disease, the index decreasing as theage increases. For this reason young natives with latentmalaria are the source of the greatest danger to the com-munity. Koch78 records the following indices: At Bogadjim: Per Cent. Infected. Children under two years 80.0 Children from two to five years 41.6 Persons over five years At BongU : Per Cent. Infected. Children under two years 100.0 Children from two to five years 46.1 Children from five to ten yea Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. |