scholarly journals The Immunobiology of Urogenital Schistosomiasis

2014 ◽  
pp. 93-124
Keyword(s):  
Urogenital Schistosomiasis

scholarly journals Urogenital Schistosomiasis—History, Pathogenesis, and Bladder Cancer

2021 ◽  
Vol 10 (2) ◽  
pp. 205
Author(s):  
Lúcio Lara Santos ◽  
Júlio Santos ◽  
Maria João Gouveia ◽  
Carina Bernardo ◽  
Carlos Lopes ◽  
...  
Keyword(s):  
Schistosoma Haematobium ◽  
Historical Perspective ◽  
Hiv Transmission ◽  
Parasite Infection ◽  
Urogenital Schistosomiasis ◽  
Host Parasite Interactions ◽  
Immunodeficiency Virus ◽  
Recent Outbreak ◽  
Host Parasite ◽  
Female Genital

Schistosomiasis is the most important helminthiasis worldwide in terms of morbidity and mortality. Most of the infections occurs in Africa, which about two thirds are caused by Schistosoma haematobium. The infection with S. haematobium is considered carcinogenic leading to squamous cell carcinoma (SCC) and urothelial carcinoma of the urinary bladder. Additionally, it is responsible for female genital schistosomiasis leading to infertility and higher risk of human immunodeficiency virus (HIV) transmission. Remarkably, a recent outbreak in Corsica (France) drew attention to its potential re-mergence in Southern Europe. Thus far, little is known related to host-parasite interactions that trigger carcinogenesis. However, recent studies have opened new avenues to understand mechanisms on how the parasite infection can lead cancer and other associated pathologies. Here, we present a historical perspective of schistosomiasis, and review the infection-associated pathologies and studies on host–parasite interactions that unveil tentative mechanisms underlying schistosomiasis-associated carcinogenesis.

scholarly journals Reduction of Urogenital Schistosomiasis with an Integrated Control Project in Sudan

2015 ◽  
Vol 9 (1) ◽  
pp. e3423 ◽  
Author(s):  
Young-Ha Lee ◽  
Hoo Gn Jeong ◽  
Woo Hyun Kong ◽  
Soon-Hyung Lee ◽  
Han-Ik Cho ◽  
...  
Keyword(s):  
Integrated Control ◽  
Urogenital Schistosomiasis

scholarly journals Impact of seven years of mass drug administration and recrudescence of Schistosoma haematobium infections after one year of treatment gap in Zanzibar: Repeated cross-sectional studies

2021 ◽  
Vol 15 (2) ◽  
pp. e0009127
Author(s):  
Lydia Trippler ◽  
Shaali Makame Ame ◽  
Jan Hattendorf ◽  
Saleh Juma ◽  
Salum Abubakar ◽  
...  
Keyword(s):  
Drug Administration ◽  
Mass Drug Administration ◽  
Odds Ratio ◽  
Schistosoma Haematobium ◽  
Treatment Gap ◽  
Urogenital Schistosomiasis ◽  
Cross Sectional ◽  
Reagent Strips ◽  
One Year ◽  
Low Prevalence

Background Considerable progress towards the elimination of urogenital schistosomiasis was made by the Zanzibar Elimination of Schistosomiasis Transmission project from 2012 till 2016, when biannual praziquantel mass drug administration (MDA) alone or with additional snail control or behaviour change interventions were implemented. Annual MDA was continued in 2017 and 2018, but not in 2019, imposing a 16-month treatment gap. We monitored the Schistosoma haematobium prevalence from 2012 till 2020 and assessed recrudescence patterns with focus on 2020. Methodology Repeated cross-sectional surveys were conducted from 2011/12 till 2020 in 90 communities and 90 schools in Zanzibar. Annually, around 4,500 adults and up to 20,000 schoolchildren were surveyed. The S. haematobium prevalence was detected by urine filtration and reagent strips. In 2020, risk factors for infection were investigated using generalized estimated equation models. Principal findings In adults, the apparent S. haematobium prevalence was 3.9% in 2011 and 0.4% in 2020. In schoolchildren, the prevalence decreased from 6.6% in 2012 to 1.2% in 2019 with vicissitudes over the years. Prominent recrudescence of infection from 2.8% in 2019 to 9.1% (+225%) in 2020 was observed in 29 schools with historically moderate prevalences (≥10%). Compared with 2019, reinfection in 2020 was particularly striking in boys aged 9–16 years. Being male was a risk factor for infection in 2020 (adults: odds ratio (OR): 6.24, 95% confidence interval (95% CI): 1.96–19.60; schoolchildren: OR: 2.06, 95% CI: 1.52–2.78). Living near to a natural freshwater body significantly increased the odds of infection in adults (OR: 2.90, CI: 1.12–7.54). Conclusions/Significance After 11 rounds of MDA over 7 years and a 16-month treatment gap, the urogenital schistosomiasis prevalence considerably rebounded in hotspot areas. Future elimination efforts in Zanzibar should focus on re-intensifying MDA plus additional interventions in hotspot areas. In low-prevalence areas, the strategy might be adapted from MDA to targeted surveillance-response.

scholarly journals Associations between infection intensity categories and morbidity prevalence in school-age children are much stronger for Schistosoma haematobium than for S. mansoni

2021 ◽  
Vol 15 (5) ◽  
pp. e0009444
Author(s):  
Ryan E. Wiegand ◽  
W. Evan Secor ◽  
Fiona M. Fleming ◽  
Michael D. French ◽  
Charles H. King ◽  
...  
Keyword(s):  
Ultrasound Image ◽  
Infection Intensity ◽  
Control Program ◽  
Monitoring And Evaluation ◽  
World Health ◽  
Current Status ◽  
School Age Children ◽  
School Age ◽  
Preventive Chemotherapy ◽  
Urogenital Schistosomiasis

Background World Health Organization (WHO) guidelines for measuring global progress in schistosomiasis control classify individuals with Schistosoma spp. infections based on the concentration of excreted eggs. We assessed the associations between WHO infection intensity categories and morbidity prevalence for selected S. haematobium and S. mansoni morbidities in school-age children. Methodology A total of 22,488 children aged 6–15 years from monitoring and evaluation cohorts in Burkina Faso, Mali, Niger, Uganda, Tanzania, and Zambia from 2003–2008 were analyzed using Bayesian logistic regression. Models were utilized to evaluate associations between intensity categories and the prevalence of any urinary bladder lesion, any upper urinary tract lesion, microhematuria, and pain while urinating (for S. haematobium) and irregular hepatic ultrasound image pattern (C-F), enlarged portal vein, laboratory-confirmed diarrhea, and self-reported diarrhea (for S. mansoni) across participants with infection and morbidity data. Principal findings S. haematobium infection intensity categories possessed consistent morbidity prevalence across surveys for multiple morbidities and participants with light infections had elevated morbidity levels, compared to negative participants. Conversely, S. mansoni infection intensity categories lacked association with prevalence of the morbidity measures assessed. Conclusions/significance Current status infection intensity categories for S. haematobium were associated with morbidity levels in school-age children, suggesting urogenital schistosomiasis morbidity can be predicted by an individual’s intensity category. Conversely, S. mansoni infection intensity categories were not consistently indicative of childhood morbidity at baseline or during the first two years of a preventive chemotherapy control program.

Urogenital schistosomiasis in libya, a case report and evaluation of the current situation

2021 ◽  
Vol 5 (2) ◽  
pp. 93
Author(s):  
AishaS Gashout ◽  
WalidK Saadawi ◽  
NadiaM Aldobea ◽  
AhmadY Amro ◽  
BadereddinB Annajar
Keyword(s):  
Case Report ◽  
Current Situation ◽  
Urogenital Schistosomiasis
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