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44 North Carolina Board of Health changes. Thus, from the nature of the insects, the hazard of malaria is incurred upon impounding. Other factors of prime importance in the control of mosquitoes in impounded waters are sanctuary and natural enemies. To utilize a location for breeding, mosquitoes must find in it more than favorable water conditions. Sanctuary from agitating elements and enemies are essential. If an otherwise favorable body of water is free of trash, floatage, and vegetation, and is open to wind and wave action, mosquito larvae do not thrive in it. The mosquito realm in all three stages is inflicted with numerous predacious enemies—fish, birds, insects, parasites, plants, reptiles, and even their own cannabalism. It is possible to utilize these natural enemies in the control of mosquitoes. One of them, a small surface minnow—Gam-busia Affinis—has been used extensively in ponds. However, conditions must be suitable to their abilities and habits or the purpose is defeated. Any material such as growth or trash and floatage will offer mosquito larvae sanctuary and bar access to the minnows. In addition to these considerations there are other factors such as geology, topography, and climate which exert direct influence on a mosquito situation and ofl'er extended avenues of study. In the work on impounded water, these were gone into extensively, however, any comprehensive treatment of the subject is too extensive for space here. Methods and Procedure Studies of impounded water projects were carried on in the form of surveys. A feature of the work was cooperation between the State Board of Health and county health organizations in whose territory the work was carried on. The general data collected was histories of past occurrences of malaria, present malaria both by history and by taking blood tests, and general premises conditions which pertain to mosquito favorability. These constitute an index to the prevalence of malaria, past and present. Also a general mosquito survey of the territory is made with a view of determining the kind and prevalence of mosquitoes. This finds service in correlation with existing malaria conditions as well as showing potentialities and also as a basis for future comparison. The territory of immediate interest for study is that within a one mile range of the territory of impounding, this being considered the probable extent of effect from a breeding area. When such an area has been laid out, workers proceeded from house to house. The purpose was explained and then through a series of questions, blanks arranged for the desired information were filled out. In addition blood smears were taken as follows: The tip of a little finger was thoroughly cleaned with alcohol, and while being gripped to cause congestion, was quickly punctured with a needle. The first drop of blood was wiped aw^ay, the second drop was picked up with an end edge of a clean slide, placed on the face of a second slide near one end, allowed a moment to spread across their widths, and with the first slide held at 45 degrees to the face of the second, was quickly smeared along two-thirds of this surface. Such a smear dries very rapidly. The serial number of the person being examined is then written with lead pencil directly into the smear. Slides were then returned to container for safe-keeping. Daily they were brought into the office, wrapped in tissue paper, and filed to await examination.
Object Description
Rating | |
Fixed Title * | NCHH-02: Biennial Report of the North Carolina State Board of Health [1909-1972] |
Document Title | Biennial Report of the North Carolina State Board of Health [1909-1972] |
Subject Name | North Carolina. State Board of Health -- Statistics -- Periodicals. |
Subject Topical | Public health -- North Carolina -- Statistics -- Periodicals. |
Subject Topical Other | Public Health -- North Carolina. |
Description | Publication began with the 13th (1909/1910); ceased with the 44th (1970/1972) |
Creator | North Carolina. State Board of Health. |
Publisher | Raleigh : The Board, 1911- |
Repository | University of North Carolina at Chapel Hill. Health Sciences Library. |
Host | University of North Carolina at Chapel Hill |
Date | 1926-1928 |
Identifier | NCHH-02-022 |
Form General | Periodicals |
Language | English |
Rights | This item is part of the North Carolina History of Health Digital Collection. Some materials in the Collection are protected by U.S. copyright law. This item is presented by the Health Sciences Library of the University of North Carolina at Chapel Hill for research and educational purposes. It may not be republished or distributed without permission of the Health Sciences Library. |
Digital Collection | North Carolina History of Health Digital Collection |
Sponsor | The North Carolina History of Health Digital Collection is an open access publishing initiative of the Health Sciences Library of the University of North Carolina at Chapel Hill. Financial support for the initiative was provided in part by a multi-year NC ECHO (Exploring Cultural Heritage Online) digitization grant, awarded by the State Library of North Carolina, and funded through the Library Services and Technology Act (LSTA). |
Volume Number | 22 |
Health Discipline | Public Health |
Digital Format | JPEG 2000 |
Print / Download PDF Version | http://archives.hsl.unc.edu/nchh/nchh-02/nchh-02-022.pdf |
Document Sort | all; group-a; nchh-02 |
Volume Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/identi/searchterm/NCHH-02-022 |
Title Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/documa/searchterm/NCHH-02 |
Catalog Record link | http://search.lib.unc.edu/search?R=UNCb2375275 |
Description
Fixed Title * | Page 44 |
Document Title | Biennial Report of the North Carolina State Board of Health [1909-1972] |
Subject Name | North Carolina. State Board of Health -- Statistics -- Periodicals. |
Subject Topical | Public health -- North Carolina -- Statistics -- Periodicals. |
Subject Topical Other | Public Health -- North Carolina. |
Description | Publication began with the 13th (1909/1910); ceased with the 44th (1970/1972) |
Creator | North Carolina. State Board of Health. |
Publisher | Raleigh : The Board, 1911- |
Repository | University of North Carolina at Chapel Hill. Health Sciences Library. |
Host | University of North Carolina at Chapel Hill |
Date | 1926-1928 |
Identifier | NCHH-02-022-0048 |
Form General | Periodicals |
Page Type | all; report/review |
Language | English |
Rights | This item is part of the North Carolina History of Health Digital Collection. Some materials in the Collection are protected by U.S. copyright law. This item is presented by the Health Sciences Library of the University of North Carolina at Chapel Hill for research and educational purposes. It may not be republished or distributed without permission of the Health Sciences Library. |
Filename | biennialreportof22nort_0048.jp2 |
Digital Collection | North Carolina History of Health Digital Collection |
Sponsor | The North Carolina History of Health Digital Collection is an open access publishing initiative of the Health Sciences Library of the University of North Carolina at Chapel Hill. Financial support for the initiative was provided in part by a multi-year NC ECHO (Exploring Cultural Heritage Online) digitization grant, awarded by the State Library of North Carolina, and funded through the Library Services and Technology Act (LSTA). |
Volume Number | 22 |
Page Number | 44 |
Health Discipline | Public Health |
Full Text | 44 North Carolina Board of Health changes. Thus, from the nature of the insects, the hazard of malaria is incurred upon impounding. Other factors of prime importance in the control of mosquitoes in impounded waters are sanctuary and natural enemies. To utilize a location for breeding, mosquitoes must find in it more than favorable water conditions. Sanctuary from agitating elements and enemies are essential. If an otherwise favorable body of water is free of trash, floatage, and vegetation, and is open to wind and wave action, mosquito larvae do not thrive in it. The mosquito realm in all three stages is inflicted with numerous predacious enemies—fish, birds, insects, parasites, plants, reptiles, and even their own cannabalism. It is possible to utilize these natural enemies in the control of mosquitoes. One of them, a small surface minnow—Gam-busia Affinis—has been used extensively in ponds. However, conditions must be suitable to their abilities and habits or the purpose is defeated. Any material such as growth or trash and floatage will offer mosquito larvae sanctuary and bar access to the minnows. In addition to these considerations there are other factors such as geology, topography, and climate which exert direct influence on a mosquito situation and ofl'er extended avenues of study. In the work on impounded water, these were gone into extensively, however, any comprehensive treatment of the subject is too extensive for space here. Methods and Procedure Studies of impounded water projects were carried on in the form of surveys. A feature of the work was cooperation between the State Board of Health and county health organizations in whose territory the work was carried on. The general data collected was histories of past occurrences of malaria, present malaria both by history and by taking blood tests, and general premises conditions which pertain to mosquito favorability. These constitute an index to the prevalence of malaria, past and present. Also a general mosquito survey of the territory is made with a view of determining the kind and prevalence of mosquitoes. This finds service in correlation with existing malaria conditions as well as showing potentialities and also as a basis for future comparison. The territory of immediate interest for study is that within a one mile range of the territory of impounding, this being considered the probable extent of effect from a breeding area. When such an area has been laid out, workers proceeded from house to house. The purpose was explained and then through a series of questions, blanks arranged for the desired information were filled out. In addition blood smears were taken as follows: The tip of a little finger was thoroughly cleaned with alcohol, and while being gripped to cause congestion, was quickly punctured with a needle. The first drop of blood was wiped aw^ay, the second drop was picked up with an end edge of a clean slide, placed on the face of a second slide near one end, allowed a moment to spread across their widths, and with the first slide held at 45 degrees to the face of the second, was quickly smeared along two-thirds of this surface. Such a smear dries very rapidly. The serial number of the person being examined is then written with lead pencil directly into the smear. Slides were then returned to container for safe-keeping. Daily they were brought into the office, wrapped in tissue paper, and filed to await examination. |
Digital Format | JPEG 2000 |
Print / Download PDF Version | http://archives.hsl.unc.edu/nchh/nchh-02/nchh-02-022.pdf |
Document Sort | all; group-a; nchh-02 |
Volume Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/identi/searchterm/NCHH-02-022 |
Title Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/documa/searchterm/NCHH-02 |
Catalog Record link | http://search.lib.unc.edu/search?R=UNCb2375275 |
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