Lancet Infectious Diseases Volume 22, Issue 11e327-e335.
In February, 2022, WHO published new guidelines with six recommendations to update the global public health strategy against schistosomiasis, including expansion of preventive chemotherapy eligibility from the predominant group of school-age...d children to all age groups (2 years and older), lowering the prevalence threshold for annual preventive chemotherapy, and increasing the frequency of treatment. This Review, written by the 2018-2022 Schistosomiasis Guidelines Development Group and its international partners, presents a summary of the new WHO guideline recommendations for schistosomiasis along with their historical context, supporting evidence, implications for public health implementation, and future research needs.
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Infection 2023 Oct;51(5):1399-1406. doi: 10.1007/s15010-023-01999-9. Epub 2023 Feb 20.
The results indicate a significantly higher rate of infections with S. mansoni in street children compared with orphans. This might be explained by the lack of access to adequate sanitation for street children ...as well as regular contact with the water of Lake Victoria. However, we did not find similar results concerning infection rates with protozoa. The study results show overall inadequate living conditions in this study population, which could be addressed by public health interventions.
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Weekly epidemiological record WER9948-707-717
In English and French
Infectious Diseases of Poverty (2022) 11:111; With some 134,073,166 people living in endemic communities at risk of infection, Nigeria is the most endemic country in Africa and requires preventive chemotherapy (PC) for a total of 26.3 million persons. The National Schistosomiasis Elimination Program...me (NSCHEP), with the support of international partners, has been implementing PC in Nigeria since 2009 and most recently will need to revise its current strategy (Additional file 1). For example, the new World Health Organization (WHO) guideline has six key recommendations that will dramatically change the implementation of schistosomiasis elimination in endemic countries [3]. However, its impact and programmatic implications will vary from country to country, hence the need for a country-specific analysis. This article discusses these recommendations with specific reference to the challenges and opportunities in Nigeria. We summarise the key pointers in Additional file 1: Box 1 against the six recommendations of the WHO 2022 guideline.
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Trop. Med. Infect. Dis. 2019, 4, 40; Schistosomiasis is an infectious disease caused by helminth parasites of the genus Schistosoma. Worldwide, an estimated 250 million people are infected with these parasites with the majority of cases occurring in sub-Saharan Africa. Within Asia, three species of ...Schistosoma cause disease. Schistosoma japonicum is the most prevalent, followed by S. mekongi and S. malayensis. All three species are zoonotic, which causes concern for their control, as successful elimination not only requires management of the human definitive host, but also the animal reservoir hosts. With regard to Asian schistosomiasis, most of the published research has focused on S. japonicum with comparatively little attention paid to S. mekongi and even less focus on S. malayensis. In this review, we examine the three Asian schistosomes and their current status in their endemic countries: Cambodia, Lao People’s Democratic Republic, Myanmar, and Thailand (S. mekongi); Malaysia (S. malayensis); and Indonesia, People’s Republic of China, and the Philippines (S. japonicum). Prospects for control that could potentially lead to elimination are highlighted as these can inform researchers and disease control managers in other schistosomiasis-endemic areas, particularly in Africa and the Americas.
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Schistosomiasis is a helminthic infection and one of the neglected tropical diseases (NTDs). It is caused by blood flukes of the genus Schistosoma. It is an important public health problem, particularly in poverty-stricken areas, especially those within the tropics and subtropics. It is estimated th...at at least 236 million people worldwide are infected, 90% of them in sub-Saharan Africa, and that this disease causes approximately 300,000 deaths annually. The clinical manifestations are varied and affect practically all organs. There are substantial differences in the clinical presentation, depending on the phase and clinical form of schistosomiasis in which it occurs. Schistosomiasis can remain undiagnosed for a long period of time, with secondary clinical lesion. Here, we review the clinical profile of schistosomiasis. This information may aid in the development of more efficacious treatments and improved disease prognosis.
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Front. Immunol. 12:620657. doi: 10.3389/fimmu.2021.620657.
HIV-1 infection disproportionately affects women in sub-Saharan Africa, where areas of high HIV-1 prevalence and Schistosoma haematobium endemicity largely overlap. Female genital schistosomiasis (FGS), caused most frequently by S. haemato...bium egg deposition in the genital tract, has been associated with prevalent HIV-1 infection in cross-sectional studies. The presence of S. haematobium eggs in genital tissue is also associated with vascularization and the accumulation of CD4+ lymphocytes and macrophages, making the granuloma-associated environment a potential contributor to HIV-1 vulnerability. In addition to modulation of the local cervicovaginal environment, FGS has also been associated with a higher frequency of systemic CD4 T-cells expressing the chemokine receptor CCR5. Tissue-entrapped eggs are also associated with clinically visible FGS-associated manifestations in the cervicovaginal mucosa. FGS lesions may breach the intact cervicovaginal immune barrier and are hypothesized to provide an entry point for HIV-1 infection. However, the underlying mechanism for potential HIV-1 vulnerability in FGS has not been fully characterized and requires further investigation.
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The American Jornal of Tropical Medicine and Hygiene, vol. 105, no.6, pp.1772-1781.
Schistosomiasis, which is the second most important parasitic infection after malaria in terms of its socioeconomic impact, is responsible for the loss of an estimated 4.5 million disability-adjusted life years (DA...LYs) worldwide. Schistosomiasis, including both intestinal and urinary forms of the disease, occurs in 78 countries across the globe. An estimated 240 million people are infected, with more than 779 million living at risk globally. The majority of those infected and those at risk for infection live in low-income countries, and approximately 80% of the morbidity occurs in impoverished communities and households in sub-Saharan Africa. Within Uganda, 91 of the 134 districts are endemic for intestinal schistosomiasis caused by Schistosoma mansoni, and the eastern region, especially along Lake Victoria, has one of the highest S. mansoni burdens worldwide. Schistosoma haematobium is only endemic in the five districts of the Lango region in northern Uganda.
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Schistosoma haematobium is a parasitic digenetic trematode responsible for schistosomiasis (also known as bilharzia). The disease is caused by penetration of the skin by the parasite, spread by intermediate host molluscs in stagnant waters, and can be treated by administration of praziquantel. Schis...tosomiasis is considered to be an important but neglected tropical disease.
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Learning pack. This pack presents a summary of exploratory qualitative research methods and
findings from frontline health implementers and communities conducted by the
research team in Ghana.
Lancet. 2014 June 28; 383(9936): 2253–2264. doi:10.1016/S0140-6736(13)61949-2. Review Article
Female Genital Schistosomiasis (FGS) is a gynaecological disease caused by Schistosoma haematobium, a parasitic worm that is acquired by skin contact with freshwater contaminated by schistosome cerceriae. Communities in which the infection is most endemic have limited access to clean water and healt...hcare services. Up to 150 million adolescent girls and women are estimated to be at risk of FGS and about 16–56 milion womens are living with FGS, with the majority of these in sub-Saharan Africa. The variability of these estimates points to the fact that this neglected tropical disease is not well studied and frequently not prioritized by local, regional, and global health policy makers.
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Plos Neglected Tropical Diseases 8(11): e3229 (20 November 2014)
Parasite Epidemiology and Control Volume 27, November 2024, e00380
The planning and implementation of intervention measures against schistosomiasis, particularly mass administration, require knowledge of the current status of the infection. This is important for monitoring the impact of the interve...ntion on disease indicators such as a decline in infection prevalence, intensity of infection, and urogenital morbidities. Following repeated rounds of mass treatment in northwestern Tanzania, the epidemiology of urogenital schistosomiasis has changed; thus, for the effective planning and allocation of resources, it is important to understand the current status of the disease in the targeted groups
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Phytochem Rev (2023) 22:1691–1806
Plants have a lot of potential and will continue to contribute feasible, effective medicines and/or pesticides; more research is warranted to fully explore their future applications
Acta Trop. 2020 Mar:203:105289. doi: 10.1016/j.actatropica.2019.105289
The role of malacological surveys to identify potential transmission sites for schistosomiasis control in this era of
mass drug administration have received little attention. In that context, the present study was conducted to
...
determine the abundance, identity and disease transmission potential of intermediate host snails for intestinal
schistosomiasis on Ijinga Island, north-western Tanzania.
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BMC Infectious Diseases (2019) 19:832
Intestinal schistosomiasis is highly endemic in Tanzania and mass drug administration (MDA) using
praziquantel is the mainstay of the control program. However, the MDA program covers only school aged children
and does not include neither adult individuals nor... other public health measures. The Ijinga schistosomiasis project
examines the impact of an intensified treatment protocol with praziquantel MDA in combination with additional
public health interventions. It aims to investigate the feasibility of eliminating intestinal schistosomiasis in a highly
endemic African setting using an integrated community-based approach.
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PLoS Negl Trop Dis 10(7): e0004794. doi:10.1371/journal.pntd.0004794
Infectious Diseases of Poverty (2020) 9:74
To detect acute schistosomiasis, low-intensity infections, or to verify the success of treatment with
praziquantel, highly sensitive test methods are required. The aim of this study was therefore to demonstrate the
performance of Schistosoma mansoni spec...ific DNA detection in serum and urine using real-time polymerase chain
reaction (PCR) in an endemic area before and after treatment.
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Cogent Medicine, 7:1, 1794272,
PUBLIC HEALTH & PRIMARY CARE | RESEARCH ARTICLE
Edutainment and infographics for
schistosomiasis health education in Ndumo area,
Kwazulu-Natal, South Africa
Tafadzwa Mindu1*, Muhubiri Kabuyaya1 and Moses J. Chimbari1
Educational interventions targeting communiti...es which are at risk of contracting
schistosomiasis infection may empower them to develop capacity to minimize the
spread of the disease. We compared the effectiveness of health education inter-
ventions for schistosomiasis knowledge uptake among school-going children in
Ndumo area, KwaZulu-Natal using a quasi-experimental trial.
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