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Incidence Of Urinary Schistosomiasis And The Contributory Risk Factors Among School

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INCIDENCE OF URINARY SCHISTOSOMIASIS AND THE CONTRIBUTORY RISK FACTORS AMONG SCHOOL

ABSTRACT

The purpose of this investigation was to determine the incidence and association of urinary Schistosomiasis among a cross section of two primary school (Agulu migrant and Umuowelle primary school) in Agulu,Anaocha Local Government Area of Anambra state.A cross sectional study was done with a total of 60 participants that provided urine samples to be examined for urinary Schistosomiasis.The schools  were Agulu migrant and Umuowelle primary school.The urine samples were examined usind the sedimentation and flotation techniques.The study was carried out during the months of November to December 2015.The data was analysed and the following result were obtained: 25(41.6%) out of the 60 samples examined were infected ; with the infection occurring high within the age range of 8-10 years 11(55%). of the 30 pupils sampled in umuowelle primary school , 12(40%) were infected while 18(60%) were not infected . 13(43.3%) out of the pupils examined from Agulu migrant school were infected and 17(56.6%)were not infected.Hence,based on d findings,it is clear there is a prevalence of urinary Schistosomiasis among school children in Agulu and therefore intervention in the study area is needed. 

KEY WORD: Haematuria, Eosinophiluria, Schistosomiasis, Schistosoma haematobium, S.mansoni, S.japonicum, S.intercalum, Niclosamide, Achloronitrosali_cylanilide, Praziquantel

                              

 

 

 

 

 

CHAPTER ONE

1.0                                                            INTROUDUTION    

            Schistosomiasis is also known as bilharzia or “snail fever”. It is a parasitic disease carried by fresh water snail infected with one of the five varities of the parasite schistosoma. Found predominantly in tropics and sub-tropical climates. (Chitsulo, 2000), schistosoma ranks second only to malaria as the most occurring parasitic disease in the tropics (chitsulo, 2000).

1.1                           BACKGROUND OF THE STUDY

        The schistosomes or blood flukes belong to the class trematoda of the phylum platyhelmintes. They are parasites of the blood stream of warm blooded vertebrates. The species which infect man are schistosoma haematobium, s mansoni, s intercalum and s japonicum. They cause the disease known as schistosomiasis or bilharziasis (uyaeme, 2011).

        Urinary schistosomiasis caused by fluke worm s haematobium is one of the most common tropical olisease which poses serious health hazard due to its associated morbidities. Globally, over 153 million people are infected with this parasitic infection (WHO1999). In Nigeria, a good number of foci infections have been documented in various parts of the country (Egwunyenga et al, 1994).

        In developing countries, the true epidemiological picture appears difficult because of inadequate researches in this direction despite its relevance in planning and control in any locality. This problem is compounded by the poor habits of people in developing countries in visiting hospital, for treatment. Also, self medication is still practiced as manifested by anti-helmintic abuse. This act is worsened by presence of inadequate health facilities. One of the consequences of the self-medication of the anti-helminthics abuse includes the suppression of the egg laying capacity of the worms. The net effect is erroneous diagnosis using ova in urine in any locality. This may also become evident in sub clinical cases and period of immaturity of the worms when they are yet to commence egg laying. Another obvious difficulty occurs during the early stages of infections. Although the uses of serological diagnosis are available, poverty poses a serious impediment to the applications of serology in the epidemiological work in these countries.

The spined eggs are laid in water, the eggs hatch into ciliated miracidia which bore into the tissues of certain fresh water snails, the intermediate host. Within the snail, each miracidium forms a sporocyst which reproduces asexually to give rise to cercariae (Raven and Johnson, 1996 cercariae production may continue for several weeks, over 300 being produced each day from a single sporocyst. The cercariae leaves the snail and swim in the water. They gain entry into man, the final host, by penetrating the skin. once in the body system, the cercariae develop into the adult fluke where they cause schistosomiasis.

Characteristic /features

1.  They are dioecions i.e sexes are separate and there is sexual dimorphism

2.  The male and female always occur together and the larger male carries the slender female in it’s ventral groove or gynaecophoral canal.

3.  They live in the blood stream of vertebrates.

4.  The eggs are not operculate and are usually armed with a spine.

5.  The furcocerous cercariae penetrates directly through the skin into the definitive host

6.  It is a water-borne disease with water snails as the intermediate host.

7.  There are two suckers, an oral and a ventral sucker (acetabulum).

8.  The alimentary canal consists only of intestinal caeca without an anus. (Uyaeme, 2011).

Habitat.

Schistosoma haematobium occurs in the veins of the vessical plexus surrounding the urinary bladder of man. it is found throughout Africa, middle East and India. the skin or integument is spined. The snail hosts are members of the genius Bulinus which are fresh water snail. it is the agent of haematuria and in renal schistosomiasis, the eggs are voided via urine (Uyaeme, 2011).

Raven and Johnson (1996) stated that the wide spread, introduction of irrigation in the tropic has contributed greatly to the spread of this serious disease, by spreading habitats for the snails that carry the worms. The disease is an occupational hazard because people are infected due to the type of occupation (job they do). It is water borne, people that frequent stagnant water bodies like lakes, streams, ponds, dams e.t.c are at risk of being infected. The presence of the appropriate snail host in a habitat is also important in the disease transmission. Pollution of water with human faeces and urine due to bad sanitary habits or disposition of human wastes in water bodies is also important.

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