scholarly journals Urinary schistosomiasis in Nigeria: a 50 year review of prevalence, distribution and disease burden

Parasite ◽  
2019 ◽  
Vol 26 ◽  
pp. 19 ◽  
Author(s):  
Charles Ogbonna Ezeh ◽  
Kenechukwu Chibuike Onyekwelu ◽  
Olaoluwa Phebian Akinwale ◽  
Lv Shan ◽  
Hu Wei
Keyword(s):  
Schistosoma Haematobium ◽  
Neglected Tropical Diseases ◽  
Nationwide Survey ◽  
Diagnostic Tools ◽  
Intermediate Hosts ◽  
Biomphalaria Pfeifferi ◽  
Urinary Schistosomiasis ◽  
Schistosomiasis Control ◽  
Ogun State ◽  
Bulinus Globosus

We reviewed survey data deposited in the Global Neglected Tropical Diseases database and many other articles on the prevalence and distribution of Schistosoma haematobium in Nigeria. Schistosoma haematobium surveys conducted over the period of 50 years under review using different diagnostic tools revealed that Ogun State has the highest prevalence, followed by Ekiti state, while the lowest prevalence was recorded in Adamawa. No incidence of Schistosoma haematobium was recorded for states such as Akwa Ibom, Bayelsa, Nasarawa, Jigawa and Gombe. In terms of endemicity, this review has shown that Nigeria is divided into four zones: hyperendemic, moderately endemic, low endemic, and no endemic zones. A survey of 47 (15%) of the 323 dams in Nigeria revealed that 45 out of the 47 dams are located in the hyperendemic zone, while the remaining two are located in the moderately endemic zone. Twenty (43%) of the total surveyed dams harboured Bulinus globosus and/or Biomphalaria pfeifferi, the local intermediate hosts of schistosomes, and 18 of these are located in the hyperendemic zone, while the other two are in the moderately endemic zone. We conclude that there is an urgent need to carry out a nationwide survey to help in planning, coordinating, and evaluating schistosomiasis control activities.

scholarly journals Schistosoma haematobiumin Lake Malaŵi: susceptibility and molecular diversity of the snail hostsBulinus globosusandB. nyassanus

2008 ◽  
Vol 82 (4) ◽  
pp. 377-382 ◽  
Author(s):  
J.R. Stauffer ◽  
H. Madsen ◽  
B. Webster ◽  
K. Black ◽  
D. Rollinson ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Causative Agent ◽  
Schistosoma Haematobium ◽  
Species Complex ◽  
Molecular Diversity ◽  
Lake Malawi ◽  
Intermediate Hosts ◽  
Urinary Schistosomiasis ◽  
Bulinus Globosus ◽  
Mitochondrial Sequences

AbstractIntermediate hosts ofSchistosoma haematobium, the causative agent of urinary schistosomiasis, in Lake Malaŵi include:Bulinus globosus, a member of theB. africanusgroup andB. nyassanus, a diploid member of theB. truncatus/tropicusspecies complex. We compared genetic variability between isolates ofS. haematobiumfrom the southern part of the lake (Cape Maclear), where bothB. globosusandB. nyassanusplay a role as intermediate hosts, and isolates from the northern part, where onlyB. globosusis host. Data show that theS. haematobiumisolates from these two areas of Lake Malaŵi cannot be distinguished using nuclear or mitochondrial sequences and are capable of cross-infections.

Co-infection of schistosomiasis, malaria, HBV and HIV among adults living in Eggua Community, Ogun State, Nigeria

2020 ◽  
Vol 41 (1) ◽  
pp. 82-86
Author(s):  
P. Olayinka ◽  
P. Ajide ◽  
H.O. Awobode ◽  
A.J. Osundiran ◽  
O.S. Onile ◽  
...  
Keyword(s):  
Schistosoma Haematobium ◽  
Integrated Control ◽  
Parasitic Disease ◽  
Cross Sectional ◽  
Urinary Schistosomiasis ◽  
Control Approach ◽  
Ogun State ◽  
Chi Squared ◽  
Conventional Microscopy ◽  
The Tropics

Schistosomiasis is a parasitic disease caused by the blood fluke that continues to plague many developing countries in the tropics. The goal of this study was to determine the occurrence of schistosomiasis, malaria, HBV and HIV co-infection among adults in some villages of Eggua Community, Nigeria (Tata, Imoto, Orile and Ebute Igbooro). In cross-sectional surveys, 240 participants were recruited from Orile and Ebute Igbooro and 207 from Tata and Imoto. Urine samples were collected and tested for urinary schistosomiasis by conventional microscopy; blood samples were tested for HBV, HIV and malaria using standard RDTs and microscopy respectively. Prevalence and co-infection of the diseases was analyzed by chi-squared (x2) test. The prevalence of schistosomiasis and malaria was 21.3% and 11.1% in Tata and Imoto respectively; and 14.5% and 19.1% in Orile and Ebute Igbooro, respectively. The overall prevalence of co-infection of urinary schistosomiasis with malaria was 2.5% and 0.4% each with HIV and HBV in the study areas. Schistosoma haematobium and Plasmodium falciparum are prevalent in the study-area, and an integrated control approach directed against the two parasites should be carried out. Keywords: Schistosomiasis; malaria; co-infection; HBV and HIV.

Investigation into the prevalence of urinary schistosomiasis in the Agulu Lake area of Anambra State, Nigeria

1994 ◽  
Vol 68 (2) ◽  
pp. 119-123 ◽  
Author(s):  
A.C. Emejulu ◽  
F.F. Alabaronye ◽  
H.M.G. Ezenwaji ◽  
F.C. Okafor
Keyword(s):  
Schistosoma Haematobium ◽  
Lake Area ◽  
Host Age ◽  
Prevalence Rates ◽  
Intensity Of Infection ◽  
Urinary Schistosomiasis ◽  
Anambra State ◽  
Epidemiological Surveys ◽  
Significant Difference ◽  
Bulinus Globosus

AbstractIn epidemiological surveys for urinary schistosomiasis caused by Schistosoma haematobium in communities around Agulu Lake, Anambra State, Nigeria, between 1990 and 1992, the infection was found to be endemic in the area, especially in three towns: Nri, Agulu, and Adazi Nnukwu. The prevalence rates varied between these communities and with the year. Inter-town prevalence rates ranged from 5.96% to 54.00%. Intravillage prevalence rates ranged between 5.50% to 96.43%. Prevalence rates were highest in villages very close to Agulu lake. There was no significant difference in prevalence between the schools. Host age, but not sex, was found to play a significant role in prevalence and intensity of infection. There was also a strong correlation between visible haematuria and egg count per 10 ml urine, but eggs could be isolated in urine samples of different shades of coloration. Analysis of incidence of infection in these communities shows that Schistosoma haematobium incidence is high in Nri (55.17%) and low at Adazi Nnukwu (5.26%). Both Bulinus globosus and B. truncatus were found in the lake and both shed mammalian bifid schistosome cercariae.

scholarly journals Susceptibility of 7 freshwater gastropod species in Zimbabwe to infection with Gastrodiscus aegyptiacus (Cobbold, 1876) Looss, 1896 : short communication

2004 ◽  
Vol 75 (4) ◽  
Author(s):  
S. Mukaratirwa ◽  
I.F. Munjere ◽  
M. Takawira ◽  
G. Chingwena
Keyword(s):  
Intermediate Host ◽  
Post Infection ◽  
Experimental Period ◽  
Freshwater Snail ◽  
Wide Distribution ◽  
Snail Species ◽  
Intermediate Hosts ◽  
Biomphalaria Pfeifferi ◽  
Experimental Conditions ◽  
Bulinus Globosus

Gastrodiscosis outbreaks due to Gastrodiscus aegyptiacus were recorded in horses in the vicinity of Harare, Zimbabwe, in the absence of Bulinus forskalii, B. senegalensis and Cleopatra sp. which are considered to be the only intermediate host snails. This suggested the possibility of other snail species acting as intermediate hosts in the life cycle of the trematode. A study was carried out to determine the susceptibility of 7 freshwater snail species to infection with G. aegyptiacus. First generation (F-1) of 5 freshwater pulmonate snail species, Bulinus tropicus, Bulinus globosus, Biomphalaria pfeifferi, Helisoma dyuri and Physa acuta that were bred in the laboratory, and 2 prosobranch snail species, Melanoides tuberculata and Cleopatra sp. that were collected from the field were used in this study. Data pertaining to mortalities and cercariae shedding were recorded throughout the experimental period. The prosobranch snails, M. tuberculata and Cleopatra sp. were susceptible to G. aegyptiacus with a minimum prepatent period of 45 days and 54 days, respectively. Bulinus tropicus, P. acuta and H. duryi were susceptible as evidenced by the presence of different generations of rediae and mature cercariae on dissection at 59 days post-infection although attempts to induce the snails to shed from 28 days post-infection did not produce cercariae. Bulinus globosus and Bio. Pfeifferi were refractory to infection. The results revealed the ability of G. aegyptiacus to infect M. tuberculata, Cleopatara sp., B. tropicus, P. acuta and H. duryi under experimental conditions and this may explain the recorded outbreaks of gastrodiscosis in equine populations in Zimbabwe in the absence of the known intermediate hosts. Bulinus tropicus is considered as the most likely major intermediate host of G. aegyptiacus because of its wide distribution in Zimbabwe and is well adapted to a wide variety of environments.

scholarly journals Molluscicidal Potential of Column Purified Fractions of Allium cepa against Intermediate Host of Urinary Schistosomiasis (Bulinus globosus) in Sokoto, Nigeria

2018 ◽  
pp. 1-6
Author(s):  
J. Suleiman ◽  
K. Singh ◽  
A. Y. Bala ◽  
M. T. Muhammad ◽  
M. S. Yakubu
Keyword(s):  
Stationary Phase ◽  
Ethyl Acetate ◽  
Intermediate Host ◽  
Laboratory Condition ◽  
Silica Gel ◽  
Allium Cepa ◽  
Mobile Phase ◽  
Intermediate Hosts ◽  
Urinary Schistosomiasis ◽  
Bulinus Globosus

Potential of column purified fractions of Allium cepa bulb against intermediate hosts of urinary schistosomiasis (Bulinus globosus) was conducted in laboratory condition. The fresh bulbs of A. cepa were purchased from Ramin Kura market of Sokoto, identified and authenticated by a taxonomist. The bulbs were sliced into pieces, air dried and powdered. Extracts were obtained using methanol as polar then purified with silica gel as a stationary phase while N-hexane and ethyl acetate (1:1) as the mobile phase. Thirteen fractions each fraction containing 10 ml of the effluent was collected, the collected extracts were left open for evaporation for 48 hours. Ten adult B. globosus were immersed in 3liters of water containing different concentrations of the fraction and each treatment was replicated three times with control in the same condition without treatment, observations were recorded after 24 hours up to 96 hours. The toxicity experiment showed that fractions (F7, F8, F6 and F9) were most toxic fractions, LC50 after 96 hours was 19.371 mg/l. based on findings from this research it can be concluded that, A. Cepa was very potent and can be used for control of B. globosus in order to prevent urinary schistosomiasis infection in endemic areas and drugs industries may use the extracts of these plants for production of molluscicides.

scholarly journals Seasonality in the transmission of schistosomiasis and in populations of its snail intermediate hosts in and around a sugar irrigation scheme at Richard Toll, Senegal

Parasitology ◽  
2001 ◽  
Vol 123 (7) ◽  
pp. 77-89 ◽  
Author(s):  
R. F. STURROCK ◽  
O.-T. DIAW ◽  
I. TALLA ◽  
M. NIANG ◽  
J.-P. PIAU ◽  
...  
Keyword(s):  
Sea Water ◽  
Control Measure ◽  
Early Summer ◽  
Intermediate Hosts ◽  
Irrigation Scheme ◽  
Biomphalaria Pfeifferi ◽  
Urinary Schistosomiasis ◽  
Senegal River ◽  
Ecological Changes ◽  
Local Host

Irrigation for intensive sugar cultivation started in the early 1980s at Richard Toll, some 100 km from the mouth of the Senegal River. Infections with Schistosoma mansoni were first seen in late 1988. This study records quantitative snail surveys for over 3 years from 1992 at sites representing different habitats in and around the irrigation scheme. Populations of both Biomphalaria pfeifferi (the intermediate host of S. mansoni) and Bulinus spp. (mainly B. truncatus, the local host of S. bovis) peaked in late ‘spring' or early ‘summer', depending on the habitat, and then remained low until the following ‘spring'. B. pfeifferi favoured smaller, man-made habitats with most transmission between May and August each year. The less abundant Bulinus spp. favoured larger natural and man-made habitats with most S. bovis transmission between April and July. S. mansoni infections were more, but S. bovis infections were less abundant than other trematodes in their respective snail hosts. Ecological changes in the early 1980s due to sugar irrigation pre-dated similar, more widespread changes in the late 1980s when the completion of dams across the Senegal River prevented seasonal rain fed floods and sea water intrusion. S. mansoni has since spread rapidly around Richard Toll. The incompatibility of the local S. haematobium strains with the dominant bulinid snails has so far prevented an epidemic of urinary schistosomiasis at Richard Toll, but the invasion of similar downstream habitats by susceptible B. globosus is worrying. The principal control measure, chemotherapy, given in the ‘winter' would minimise the rate of reinfection. It could be reinforced by judicious mollusciciding within the sugar irrigation scheme but not elsewhere.

scholarly journals Prevalence of Schistosoma haematobium and Its Intermediate Hosts in Makurdi Metropolis

2018 ◽  
pp. 1-8
Author(s):  
V. U. Obisike ◽  
E. U. Amuta ◽  
P. S. Adaaku
Keyword(s):  
Statistical Analysis ◽  
School Children ◽  
Schistosoma Haematobium ◽  
Control Measures ◽  
Urine Samples ◽  
Freshwater Snails ◽  
Snail Species ◽  
Intermediate Hosts ◽  
Urinary Schistosomiasis ◽  
Significant Difference

Introduction: Urinary Schistosomiasis (US) is a chronic water-borne infection caused by digenetic trematode belonging to the genus schistosoma, it is generally caused by Schistosoma haematobium. Bulinus globosus is a species of a tropical freshwater snail that acts as an intermediate host of Schistosoma haematobium. Aim: The study was aimed at ascertaining the prevalence of Schistosoma haematobium infection and to describe its intermediate hosts among school children in Makurdi. Methodology: Snails were collected by hand picking and scooping net methods. An epidemiological survey research on urinary Schistosomiasis was undertaken from September to November 2017 among students that volunteered in the selected schools within Makurdi metropolis. A total of 97 freshwater snails were collected and 200 urine samples involving pupils aged between 5 to 18 years were collected and analyzed for the eggs of Schistosoma haematobium by microscopy using Urine Syringe Filtration Technique (USFT). Statistical analysis was performed using SPSS 20. Chi-square test was used to determine the significant difference between variables. Results: Out of the 97 species of freshwater snails that were caught 41(42.3%) was Bulinus spp. Of the 200 urine samples analyzed, 49(24.5%) were found to be infected with ova of S. haematobium. The infection was higher among males 30(25.6%) than females 19(22.9%) although the difference was not statistically significant (χ2CAL=0.19, χ2TAB=3.84). The prevalence of Schistosoma haematobium infection among school children in relation to age showed that ages 15-19 years had the highest prevalence 13(38.2%)  and ages 5-9 had the lowest prevalence 3(8.5%). The statistical analysis also revealed that there is no significant difference (8.302) in Schistosoma haematobium infection among the four schools in the study area. The presence of many snail species especially the Bulinus spp and increased contact time with the Schistosoma haematobium infested freshwater habitat was thought to be responsible for the prevalence of the disease in the area. Finding of this study shows that urinary Schistosomiasis was found to have a low prevalence in the area studied and there is the need to intensified integrated control measures to reduce or completely eradicate the disease.

scholarly journals Detection of Urinary Tract Pathology in SomeSchistosoma haematobiumInfected Nigerian Adults

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
O. S. Onile ◽  
H. O. Awobode ◽  
V. S. Oladele ◽  
A. M. Agunloye ◽  
C. I. Anumudu
Keyword(s):  
Schistosoma Haematobium ◽  
Bladder Wall ◽  
Urinary Schistosomiasis ◽  
Mean Intensity ◽  
Bladder Wall Thickness ◽  
Ogun State ◽  
Adult Participants ◽  
Bladder Abnormalities ◽  
Bladder Pathology ◽  
The Mean

Screening forSchistosoma haematobiuminfection and its possible morbidity was carried out in 257 adult participants in Eggua community, Ogun State, Nigeria. Parasitological assessment for the presence of ova ofS. haematobiumin urine and abdominopelvic ultrasonographic examination for bladder and secondary kidney pathology were carried out.S. haematobiumprevalence of 25.68% (66/257) was recorded among the participants. There was a significantly higher prevalence of 69.2% of urinary schistosomiasis in the females than the prevalence of 31.8% in males (P=0.902). The intensity of infections was mostly light (55) (21.8%) compared to heavy (10) (3.9%) with the mean intensity of 16.7 eggs/10 mL urine. Structural bladder pathology prevalence among participants was 33.9%. The bladder and kidney pathologies observed by ultrasound in subjects withS. haematobiuminfections included abnormal bladder wall thickness (59%), abnormal bladder shape (15.2%), bladder wall irregularities (15.2%), bladder masses (1.5%), bladder calcification (1.5%), and hydronephrosis (3%). Infection withS. haematobiumwas associated with bladder pathology. Higher frequencies of bladder abnormalities were observed more in the participants with light intensity ofS. haematobiuminfection than in those with heavy infection. More bladder pathology was also seen in women than in men, although this was not statistically significant. In conclusion, there is evidence that the development of bladder pathology may be associated withS. haematobiuminfection.

The Role of Community Participation in Fighting Schistosomiasis

2020 ◽  
pp. 123-135
Author(s):  
Adil Moumane ◽  
Ahmed Karmaoui ◽  
Jamal Al Karkouri ◽  
Jamal Akchbab
Keyword(s):  
Community Participation ◽  
Local Community ◽  
Neglected Tropical Diseases ◽  
World Health ◽  
Tropical Diseases ◽  
Urinary Schistosomiasis ◽  
Schistosomiasis Control ◽  
The World ◽  
Health Organization

In 2009, the Moroccan Ministry of Health in collaboration with the World Health Organization confirmed that the transmission of schistosomiasis had ceased in all previously endemic provinces of Morocco. This achievement couldn't have been achieved without the effective participation and engagement of local communities. In this chapter, studies of community participation strategies for schistosomiasis control in Akka oasis were reviewed. Southern Morocco was known to be a foci site for urinary schistosomiasis since 1937. Combined efforts between health officials and local community participation have achieved the elimination of this neglected tropical disease, where the last cases in these foci were recorded in the early 2000s. The results of this chapter can be used to increase awareness of the need for community participation in controlling neglected tropical diseases such as schistosomiasis.

The Application of Catalytic Models to Schistosomiasis in Snails

1971 ◽  
Vol 45 (2-3) ◽  
pp. 189-200 ◽  
Author(s):  
R. F. Sturrock ◽  
G. Webbe
Keyword(s):  
West Indies ◽  
Quantitative Data ◽  
Schistosoma Haematobium ◽  
Growth Curves ◽  
Biomphalaria Glabrata ◽  
The Other ◽  
Snail Population ◽  
Intermediate Hosts ◽  
Biomphalaria Pfeifferi ◽  
Independent Verification

1. With the aid of field growth curves, age-prevalence curves can be derived from field collections of snails, using cercarial shedding as proof of infection by schistosomes.2. Such curves were obtained from eight collections of field snails: one sample each of Bulinus (Physopsis) nasutus productus and Biomphalaria pfeifferi, intermediate hosts respectively of Schistosoma haematobium and S. mansoni in Tanzania, and six samples of Biomphalaria glabrata, intermediate host of S. mansoni on St. Lucia, West Indies.3. Catalytic curves were fitted to the data and in each case the two-stage curve gave the most satisfactory fit.4. This curve is the resultant of two opposing forces: one force being the rate of infection and the other the rate of loss of infection in a snail population.5. The rate of infection may be defined as the number of successful snail-miracidium contacts per 1,000 snails per week, while the rate of loss of infection is taken to represent the number of deaths per 1,000 infected snails per week.6. The underlying assumptions of this form of analysis are discussed and, in view of the independent verification of some of the calculated rates, the values are considered realistic.7. Besides providing quantitative data for inclusion in mathematical models of schistosome transmission, the technique offers an additional means of assessing the efficacy of certain methods of controlling transmission.

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