Received Date: April 10, 2018; Accepted Date: April 16, 2018; Published Date: April 23, 2018
Citation: Uchenna MO, Ifeoma ME, Ochiabuto OMTB, Obi MC, EmmanuelI O, et al. (2018) Intestinal Parasites, Malaria and Anemia among School Children in Some Flood Affected Areas of Ogbaru Local Government Anambra State, Nigeria. Arch Clin Microbiol. Vol.9 No.2:80 doi:10.4172/1989-8436.100080
Copyright: © 2018 Uchenna MO, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
An epidemiological study was carried out on school children in some flood affected areas of Ogbaru local government Anambra state Nigeria to assess their health and environment after the 2011/2012 flood. Four hundred and eighty primary school children were examined for intestinal parasite, malaria parasite and anaemia. Formol acetate concentration method was used to analyse the stool samples for intestinal parasites. Giemsia’s staining technique was used for malaria parasite test, while Haematocrit packed cell volume capillary method and cyanmethaemoglobin method were used to screen for anaemia. Fifty two point five (52.5%) percent were infected with one or more of the intestinal parasites. Eighty six point four six percent (86.46%) were infected with malaria parasite, while 55.21% were anaemic (hemoglobin <11 g/dl). Ascaris lumbricoides was the highest (29.20%) intestinal parasites obtained while Hymenolepis nana was least (2.35%). The highest rate of intestinal parasite infection was seen in the age group10-13 years (52.54%) and the least was from 14-17 years (49.02%). Intestinal parasites were more in females (51.29%) than in males (48.08%). The highest rate of infection with malaria parasite was seen among the ages of 6-9years (89.83%) while 10-13 years and 14-17 years had a prevalence of 85.17% and 85.62% respectively. Malaria infection was more prevalent in males (45.83%) than females (40.63%). The highest prevalence of anaemia was seen between the ages of 10- 13 (57.77%) and the least 14-17 (52.29%). Forty seven point five percent of the children had both malaria parasite and anaemia. There was significant association between PCV of malaria infected children and non infected children (p<0.05). These findings suggest that this area has some major public health challenges therefore the need for adequate measures to remedy the situation and avoid epidemics.
Health assessment; School children; Flood affected areas; Ogbaru Local Government Anambra State
Floods are the most common natural disaster in both developed and developing countries, and they are occasionally of devastating impact. Their impacts on health vary between populations for reasons relating to population vulnerability and type of flood event. There is potential for increased faecal-oral transmission of disease, especially in areas where the population does not have access to clean water and sanitation. Such diseases include, nonspecific diarrhoea , poliomyelitis, rotavirus, typhoid and paratyphoid, cholera, dysentery .
Intestinal parasites account for one of the major faecal orally transmitted diseases which are public health problem worldwide. It is estimated that 3.5 billion people are infected by intestinal parasites and 350 million fall ill due to these organisms . At highest risk of morbidity are pre-school, school-age children and pregnant women . Ascaris lumbricoides, Trichuris trichiura, the blood-feeding hookworms Ancylostoma duodenale and Necator americanus, which cause ankylostomiasis and Strongyloidies stercoralis is estimated to have infected 1.2 billion, 800 million, and 740 million people respectively worldwide . Worldwide, 320 million school-age children are infected with A. lumbricoides . The high incidence of intestinal parasite has been attributed to a number of factors from unhygienic habits, contaminated food and water to poor sanitary conditions .
It is an important cause of morbidity in school age children who harbor the highest intensity of worm infestation, living in conditions of poor sanitation, and their impact on morbidity and mortality is more severe in malnourished populations . Also 68.2% prevalence rate of intestinal helminthes from stool samples of children 0-17 years was reported from Ibadan . Ova of helminths can also be isolated from the underneath of fingernails  and on the surface of Nigerian currency .
Anaemia is a major health problem worldwide. According to the World Health Organisation two billion people suffer from anaemia in the world  and common among children as a result of nutrition deficiencies, parasitic infections and haemoglobinopathies . Iron deficiency anaemia accounts for most of the anaemia that occurs due to parasitic infections. In the tropics, parasitic infections such as hookworm, schistosomiasis and malaria are predictors for anaemia [12-14]. The contribution of single parasitic infections on the risk of anaemia in schoolchildren is well known, with risk correlated with infection intensity .
With the recent flooding, the people of Ogbaru local government area of Anambra state are faced with so many challenges such as poor sanitary system; overflowing of toilets, poor drainage etc. These have affected their lives negatively. This study tends to find out the prevalence of intestinal parasite, malaria parasite and anaemia amongst the children in the environment given these recent challenges (Tables 1-4).
|School Location||No Examined||No of Infected||A lumbricoidies (%)||T tricuria (%)||Hookworm (%)||H.nana (%)||E.vermicularis (%)||Taenia (%)||E.histo/disp (%)||G.lamblia (%)||Total|
Table 1: Prevalence of intestinal parasites from school children in ogbaru lga.
|A lumbricoidies (%)||50(20.00)||49(21.30)||99|
|T tricuria (%)||6(2.40)||10(4.35)||16|
Table 2: Sex distribution of the intestinal parasites among the school children.
|Variable||Frequency||Prevalence (%)||P value|
|No of people in the family|
|Source of water|
|Refugee camp during flood|
|Stayed at camp||106||47.17||0|
|Bite finger nails||314||50|
|Does not Bite finger nails||166||57.23||0.891|
|Walk bare foot||237||54.43|
|Does not walk bare foot||243||50.62||0.891|
Table 3: Social and demographic factors of school children.
|School location||No examined||No Infected (%)||Infected male (%)||Infected female (%)|
Table 4: Prevalence of malaria parasite among school children from different towns visited.
This study is designated to determine the prevalence of malaria parasite, intestinal parasites and anaemia among primary school children in Ogbaru LGA, ascertain the potability of their drinking water and determine the prevalence of pathogenic fungi in their classrooms.
The study was done in Ogbaru Local Government Area in Anambra State south-eastern Nigeria.
The study population was primary school children from nine towns in Ogbaru LGA who were present during the study period. Not more than two primary schools from each community within Ogbaru LGA were selected with at least 32 children all within 6-17 years that fulfilled the inclusion criteria, in all 480 children.
Approval was sort from Anambra State Universal Basic Education Board (ASUBEB), The consent of Ogbaru Local Government Educational Secretary, school authorities, and ethical clearance from the Faculty of Health Science and Technology, Nnamdi Azikiwe University, Nnewi campus was also obtained. Verbal and written informed consent was sought from all eligible individuals and from their parents.
The investigation was carried out at the Department of Medical Laboratory Science, Nnamdi Azikiwe University Nnewi Campus (Tables 5-7).
|Age range||No. of children tested (%)||Intestinal parasites (%)||Anaemia (%)||Malaria parasites (%)|
|> 13 (YEARS)||153(32.08)||75(49.02)||80(52.29)||131(85.62)|
Table 5: The prevalence of malaria parasites, intestinal parasites and anaemia on school children in ogbaru lga by age range.
|School location||No. of children||PCV (%)||HB(g/dl)|
Table 6: PCV and hb of children lower than the accepted reference value from various towns in ogbaru lga.
|Malaria parasite||No of children with anaemia||Mean ± std||p-value||mean ± std||p-value|
|Level of parasitemia (+)||hb (g/dl)||pcv (%)|
|Level of parasitemia (++)||93||9.95 ± 0.76||0.156||30.03 ± 2.54||0.017|
|No parasite seen|
|Total||265||10.02 ± 0.73||30.50 ± 2.63|
Table 7: Effects of malaria parasitaemia on haemoglobin concentration and packed cell volume.
All specimen were examined to detect the presence of adult worms, or segment, the consistency, colour, presence of mucus and blood were also noted. Ethyl acetate concentration technique as described by Cheesbrough  was used to examine the stool for the presence of larvae, cysts or ova of parasites. Using a stick, about 1g from each of the faecal specimen was emulsified in 4 ml of 10% formol water. Another 3 ml of 10% formal water was added. The emulsified faeces were sieved into a beaker. The suspension was later transferred into a glass centrifuge tube and about 4 ml of ethyl acetate was added. The tube was stoppered and shaken vigorously for 1munite and then centrifuged at 3,000 rpm for 1munite. The layer of faecal debris was loosened from side of the tube using an applicator stick and the supernatant poured away. The deposit was re-suspended by tapping the bottom of the tube with finger. The deposit was transferred to a slide using a Pasteur pipette. The slide was covered with a cover slip and examined under x10 and x40 objectives of the microscope. The ova/larvae of parasites were identified with reference to Atlas of Parasitology .
Malaria parasite test
Thick and thin blood smears were prepared and stained with giemsa stain and examined according to the procedure described by Cheesbrough .
Estimation of Packed cell volume (PCV) using haematocrit packed cell volume capillary method.
CHROMagar liquid ECC, KF Streptococcus Agar and Reinforced Clostridium agar were prepared according to manufacturers’ instruction.
KF Streptococcus agar was prepared based on formulation described by Kennor et al. . The filtered sample on the membrane filter was transferred directly on the agar medium avoiding the formation of bubbles. The plates were inverted and incubated at 37°C for 48hours. After 48hours the red and pink colonies were counted and reported as faecal streptococci per 100ml. To count the spores of sulphite-reducing Clostridia, the volume (100 ml) of the water Sample was heated to 60 ± °C and the whole volume maintained at this temperature for 15 minutes. Cooked meat medium were prepared according to manufactures instruction and the samples were inoculated into the medium for enrichment and incubated for 24hours at 37°C. Prior to filtration, reinforced clostridium differential agar was prepared and allowed to solidify. The samples were filtered and the filter membrane placed on the Petri dishes containing the medium and incubated at 37°C in an anaerobic jar containing gas-pak for 24 hours .
After incubation, all black or grey colonies were counted an expressed as number of colonies per 100 ml.
The colonies were sub-cultured on blood agar and incubated anaerobically for 24 hours according to method described by Chessbrough . The colonies showed marked haemolysis on blood agar after 24hours.
Gram stain as described by Chessbrough  and spore staining using Schaeffer-Fulton Method  was carried out to identify the organism. Gram-positive organisms-purple, Gram-negative organisms-pink. Organism was large gram positive rods.
The data collected were analysed using the statistical package for the social sciences-SPSS software version 16.0, ANOVA, ttest and Frequency distribution. Level of significance was set at 95% confidence interval, p<0.05 was considered statistically significant.
In this study, a high prevalence of intestinal parasites (52.50%) was obtained. The children were infected with at least one species of these parasite; Ascaris lumbricoides, Entamoeba histolytica/ dispar, Giardia Lamblia, Taenia spp, Hook worm, Trichuris trichura, Enterobius vermicularis Hymenolepis nana. This prevalence is comparable with the rate reported in similar studies in Nigeria by Banke et al.  54.13%, Awolaju and Morenikeji  48.4%. However it is above the rate of 25.8% recorded by Akingbade et al.  among children with diarrhea in Abeokuta, Ogun State, Odu et al.  recorded 15.7% prevalence among primary school children in Rivers State. The higher prevalence and highest occurring intestinal parasite reported for Ascaris lumbricoides (29.20%) in this study is lower than that of Akingbade et al.  54.8%, Odu et al.  57.4%, Omorodion et al.  47.7% and 25% in Delta and Edo respectively. Hymenolepis nana (2.35%) was the least occurring intestinal parasite. This is in agreement with the report of Emmy-Egbe et al.  with prevalence of 2.6%. Intestinal parasitic infections are mainly acquired through faecal-oral route. High prevalence of intestinal parasite had been attributed to poor environmental conditions; shortage of good water supply, indiscriminate defecation and poor personal hygiene  which was also observed in this study and most of the children have never been dewormed. Entamoeba histolytica was the second most prevalent parasite amongst the children (22.1%). Banke et al.  observed a prevalence of 7.06%, Akingbade et al.  19.4%. Infection of human by E. histolytica commonly results in amoebiasis . E. histolytica is indicator organism of faecal contamination of food or water and are frequently present in unhygiencally prepared foods and can lead to outbreaks of ameobiasis. The higher prevalence and incidence of Entaemoeba histolytica and Giardia lamblia are a reflection of the poor environmental sanitation and poor personal hygiene and unclean habits practiced by these children. Ignorance and illiteracy of the parents can also be attributed to these infections due to their lack of information on the mode of transmission and symptoms of intestinal parasite infection. Survey in Nigeria, by Okonko et al.  indicated that intestinal parasitic infections such as amoebiasis are growing problem in the country.
Most of the pupils especially those from primary schools in Odekpe, okpoko and Ossomala had mixed infection of Ascaris lumbricoides, Entamoeba histolytica/dispar, Giardia Lamblia or Hookworm. Multiple parasitisms have also been reported by Chukwuma et al. .
Parents occupational prevalence showed that infection rate was highest among the children whose parents were farmers (58.12%), followed by the pupils whose parents where traders (51.42%) while the pupils whose parents where civil servants showed the least prevalence (33.80%) of infection with intestinal parasites. Difference in parents occupation prevalence was found to be statistically significant (p<0.05).
Afzal and Sultan  reported a malaria prevalence of 75% in a flood affected area of Muzaffargarh District, Southern Punjab, Pakistan. Children in the rural area are less protected and are more prone to mosquito bite . Brown  stated that in hyperendemic areas, the malaria is mild and asymptomatic in older children. Age and nutritional status of the host might represent natural or acquired resistance and can play a role in the severity of the disease produced .
From this study, most of the children were anaemic, therefore anaemia is of public health importance in Ogbaru LGA especially among the school children. The rate (55.21%) recorded in this study is higher than the prevalence rate (38.6%) recorded in Edo state by Osazuwa and Oguntade . The highest prevalence of anaemia (57.77%) was seen within age 10-13 followed by age 6-9 years (55.93%) and the least in age 14-17 years (52.29%).
The effect of malaria parasitaemia on anaemia using the mean and standard deviation of Hb and PCV of the children with malaria parasite showed no significant difference between malaria parasitaemia and Hb concentration (p>0.05), however there was a significant difference between malaria parasitaemia and PCV (p<0.05). Okafor et al.  and Cheesbrough  reported that anaemia as the commonest complication of malaria among 1-5 age groups. This study shows that anaemia found in some of the children could be due to other causes other than malaria.
The prevalence rate of intestinal parasite, malaria and anaemia in this study indicates that they are important public health problems in Ogbaru Local Government Area. There should be collective effort engineered towards prevention from infection and treatment of already established cases.
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