Assessment of cercarial rhythmicicity and dynamics as micro-epidemiology factors influencing transmission pressure of schistosomiasis in Gunaid Scheme, Sudan
Author
Ahmad, Abd al-Aziz Abd al-Rahim
Source
Sudan Journal of Basic Sciences. |n Series : Biological Sciences
Issue
Vol. 2, Issue 3 (31 Dec. 2002), pp.117-132, 16 p.
Publisher
Sudan Institute for Natural Sciences Publication Unit
Publication Date
2002-12-31
Country of Publication
Sudan
No. of Pages
16
Main Subjects
Abstract EN
For understanding the dynamics of schistosoniasis transmission in any endemic area, elements of analytical micro-epidemiological aspects should be highlighted.
The key factors of these aspects are the production and dynamics of the infective stage, the most risky time for man to acquire infection.
Within the aforesaid frame, a series of laboratory experiments were conducted to determine cer-cariai productivity and dynamics from Biomphalaria pfeifferi snails infected with different numbers of Schistosoma mansoni miracidia.
The laboratory experiments indicated that snails exposed to 4-6 miracidia survive longer and produced more cercariae.
The peak of s.
mansoni cercarial production coincides with the peak of human ac-tivities during the day.
Therefore, those who contact watercourses in the field during the day, or late in the after noon, will be at a greater risk of becoming heavily infected if water is stagnant.
The reflection of the cercarial emission rhythms on the micro-evolutionary changes taking place in schistosome populations, was highlight.
The finding could pronouncedly be exploited in a well-planned organised health education programme, for villagers to a void watercourses during mid day.
American Psychological Association (APA)
Ahmad, Abd al-Aziz Abd al-Rahim. 2002. Assessment of cercarial rhythmicicity and dynamics as micro-epidemiology factors influencing transmission pressure of schistosomiasis in Gunaid Scheme, Sudan. Sudan Journal of Basic Sciences. |n Series : Biological Sciences،Vol. 2, no. 3, pp.117-132.
https://search.emarefa.net/detail/BIM-558707
Modern Language Association (MLA)
Ahmad, Abd al-Aziz Abd al-Rahim. Assessment of cercarial rhythmicicity and dynamics as micro-epidemiology factors influencing transmission pressure of schistosomiasis in Gunaid Scheme, Sudan. Sudan Journal of Basic Sciences. |n Series : Biological Sciences Vol. 2, no. 3 (Dec. 2002), pp.117-132.
https://search.emarefa.net/detail/BIM-558707
American Medical Association (AMA)
Ahmad, Abd al-Aziz Abd al-Rahim. Assessment of cercarial rhythmicicity and dynamics as micro-epidemiology factors influencing transmission pressure of schistosomiasis in Gunaid Scheme, Sudan. Sudan Journal of Basic Sciences. |n Series : Biological Sciences. 2002. Vol. 2, no. 3, pp.117-132.
https://search.emarefa.net/detail/BIM-558707
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 130-132
Record ID
BIM-558707