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The impact of residual infections on Anopheles-transmitted Wuchereria bancrofti after multiple rounds of mass drug administration

D. K. de Souza; Ansumana, R.; Sessay, S.; et al. Parasites & Vectors (2015) CC

Many countries have made significant progress in the implementation of World Health Organization recommended preventive chemotherapy strategy, to eliminate lymphatic filariasis (LF). However, pertinent challenges such as the existence of areas of residual infections in disease endemic districts pose ... more

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Guidelines for the Prevention and Treatment of Opportunistic Infections

Clinical Info HIV gov. (2018) CC

Chagas disease (American trypanosomiasis) is caused by the protozoan parasite Trypanosoma cruzi, and transmitted to humans by infected triatomine bugs, and less commonly by transfusion, organ transp ... more

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Current epidemiological evidence for predisposition to high or low intensity human helminth infection: a systematic review

Wright J.E., Werkman M., Dunn J.C. et al Parasites and Vectors (2018) C2

Background: The human helminth infections include ascariasis, trichuriasis, hookworm infections, schistosomiasis, lymphatic filariasis (LF) and onchocerciasis. It is estimated that almost 2 billion people worldwide are infected with helminths. Whils ... t the WHO treatment guidelines for helminth infections are mostly aimed at controlling morbidity, there has been a recent shift with some countries moving towards goals of disease elimination through mass drug administration, especially for LF and onchocerciasis. However, as prevalence is driven lower, treating entire populations may no longer be the most efficient or cost-effective strategy. Instead, it may be beneficial to identify individuals or demographic groups who are persistently infected, often termed as being “predisposed” to infection, and target treatment at them. Methods: The authors searched Embase, MEDLINE, Global Health, and Web of Science for all English language, humanbased papers investigating predisposition to helminth infections published up to October 31st, 2017. The varying definitions used to describe predisposition, and the statistical tests used to determine its presence, are summarised. Evidence for predisposition is presented, stratified by helminth species, and risk factors for predisposition to infection are identified and discussed. Results: In total, 43 papers were identified, summarising results from 34 different studies in 23 countries. Consistent evidence of predisposition to infection with certain species of human helminth was identified. Children were regularly found to experience greater predisposition to Ascaris lumbricoides, Schistosoma mansoni and S. haematobium than adults. Females were found to be more predisposed to A. lumbricoides infection than were males. Household clustering of infection was identified for A. lumbricoides, T. trichiura and S. japonicum. Ascaris lumbricoides and T. trichiura also showed evidence of familial predisposition. Whilst strong evidence for predisposition to hookworm infection was identified, findings with regards to which groups were affected were considerably more varied than for other helminth species. Conclusion: This review has found consistent evidence of predisposition to heavy (and light) infection for certain human helminth species. However, further research is needed to identify reasons for the reported differences between demographic groups. Molecular epidemiological methods associated with whole genome sequencing to determine ‘who infects whom’ may shed more light on the factors generating predisposition. more

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Prevalence of Schistosoma Haematobium Measured by a Mobile Health System in an Unexplored Endemic Region in the Subprefecture of Torrock, Chad

Layaye, D.; E de Bruijn, M.; de Jong, T.; et al. JMIR Publication Advancing Digital Health and Open Science (2019) CC

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 ... more

An Update on the Knowledge of Parasite–Vector Interactions of Chagas Disease

Schaub, G. Research and Reports in Tropical Medicine (2022) CC

This review focusses on the interactions between the etiologic agent of Chagas disease, Trypanosoma cruzi, and its triatomine vector. The flagellate mainly colonizes the intestinal tract of the insect. The effect of triatomines on trypanosomes is in ... more

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Elimination of onchocerciasis in Africa by 2025: the need for a broad perspective

Cupp, E.; Sauerbrey, M.; Cama, V. et al. National Library of Medicine (2019) CC

In response to the recent publication “Is onchocerciasis elimination in Africa feasible by 2025: a perspective based on lessons learnt from the African control programmes” by Dadzie et al., it is important to clarify and highlight the positive ... more

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Cutaneous Leishmaniasis: Urgent need to develop more effective and user-friendly point-of-care diagnostic tools

DNDi redeLEISH (2022) CC

Leishmaniasis is a complex vector-borne disease involving in its transmission several species of protozoan parasites called Leishmania, a wide variety of animal reservoirs and phlebotomine sandflies ... more

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Global vector control response 2017–2030: A strategic approach to tackle vector-borne diseases. Summary

World Health Organization (WHO) (2017) C_WHO

Mosquitoes, flies, bugs and other vectors transmit viruses, parasites and bacteria that infect m ... more

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South Africa: SIMPLE STEP-BY-STEP GUIDE to the DIAGNOSIS and MANAGEMENT of SEVERE MALARIA

Department of Health, Republic of South Africa (2016) C2

District hospital level Severe | Malaria is a Medical Emergency

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WHO initiative to stop the spread of Anopheles stephensi in Africa

World Health Organisation (WHO) (2023) C_WHO

Anopheles stephensi is a mosquito species that is capable of transmitting both Plasmodium falciparum and P. vivax malaria parasites. Unlike the other main mosquito ... more

Control and surveillance of human African trypanosomiasis: report of a WHO Expert Committee

World Health Organization WHO (2013) C_WHO

The previous report of the WHO Expert Committee on this disease followed a meeting in 1995. Intensive, coordinated efforts against HAT during the intervening 18 years have resulted in a decrease in incidence to a point at which elimination is considered feasible. This report provides informati ... more

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About Leishmaniasis

Centers for disease control and prevention CDC (2020) C_CDC

Leishmaniasis is a parasitic disease that is found in parts of the tropics, subtropics, and southern Europe. Leishmaniasis is caused by infection with Leishmania parasites, which are spread by the b ... more

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Senegal - Malaria epidemiological profile

World Health Organization (WHO) (2017) C_WHO

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Leishmaniasis

World Health Organization WHO (2023) C_WHO

There are 3 main forms of leishmaniases: visceral (the most serious form because it is almost always fatal without treatment), cutaneous (the most common, usually causing skin ulcers), and mucocutaneous (affecting mouth, nose ... more

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Leishmaniasis is a vector-borne disease

Pan American Health Organization PAHO (2022) C_WHO

Leishmaniasis is a vector-borne disease with a wide variety of parasite species, reservoirs, and vectors involved in transmission. It is caused by different species of the protozoa Leishmania ... more