الفهرس 
ContentsOnly 14 pages are availabe for public view
 |  | from | 64 |  |  |
| | | from | 64 | | |
Abstract
In tropical and subtropical countries many problems in the community, endemic and sometimes epidemic diseases may have serious physical and economic effects on the population. Helminths have the widest and most general distribution. The highest rates are those whose infective stages are generated in the soil. ’ Th&y cause the highest percentage of human diseases, such diseases may be of great general or local nature and ere either as a result of the reaction between the human host and the worm or due to depriving the body from the essential nutrients.^ ’
The commonest helminthe in tropical and subtropical
countries are Ascaris lumbricoidea.Trichuris . trichjura
r americjtns. Trlchuris tritshiura infection is one
of the parasites which is frequently encountered in our country, Human whip worm thrives chiefly in warm tropical climatee in over crowded areas viith poor sanitation but its distribution is world v/ide, therefore it is abundant in tropical and subtropical countries rchere the high temper-
maturation.
* ’
ature permits very rapid
The whip woim was described under the genus ’l?richuris in Germany in 1761 by itoederos who believed that the filiform anterior e.nd was the tail. The species was first
correctly named by Linnaeus ih 1771*
(3)