In the Region of the Americas, the leishmaniases are a group of diseases caused by various species of Leishmania, which cause a set of clinical syndromes in infected humans that can involve the skin, mucosa, and visceral organs. The spectrum of clinical disease is varied and depends on the interacti...on of several factors related to the parasite, the vector, and the host. Cutaneous leishmaniasis is the form most frequently reported in the Region and nearly 90% of cases present single or multiple localized lesions. Other cutaneous clinical forms, such as disseminated and diffuse cutaneous leishmaniasis, are more difficult to treat and relapses are common. The mucosal form is serious because it can cause disfigurement and severe disability if not diagnosed and treated early on. Visceral leishmaniasis is the most severe form, as it can cause death in up to 90% of untreated people.
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In 2007, the Sixtieth World Health Assembly adopted resolution WHA60.13 on control of leishmaniasis, urging Member States, among other actions:
to strengthen prevention, active detection and treatment of cases of both cutaneous and visceral leishmaniasis in order to decrease the disease burde...n; and
to strengthen the capacity of peripheral health centres to deliver primary and secondary care, so that they provide appropriate affordable diagnosis and treatment and act as sentinel surveillance sites.
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La implementación de la presente Norma Nacional y Manual de Procedimientos Técnicos de la Leishmaniasis en el país, permitirá al personal de salud del sistema público y privado fortalecer sus capacidades técnicas y operativas a través de la estandarización y unificación de estrategias y acc...iones para mejorar la prevención, atención, control, vigilancia entomológica y epidemiológica de esta enfermedad de manera oportuna y eficiente. Así mismo promoverá el cumplimiento de la Gestión Participativa y de Atención en Salud a través de la participación e involucramiento de la sociedad civil en la adopción de conductas prevenibles y de atención oportuna, así como demandar mayor acceso a la salud a través de la abogacía ante las Autoridades Locales y Municipales para el fortalecimiento en la otorgación de recursos humanos, insumos, infraestructura y medicamentos para este fin.
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Surveillance mondiale de la leishmaniose: 2021, évaluation de l’impact de la pandémie de COVID-19
The aims of this report are to update the results of the GHO leishmaniasis indicators reported by Member States to WHO up to 2021, to describe specific indicators of gender and age distribution, re...lapses, the AmBisome® donation programme, selected outbreaks, case fatality rates for visceral leishmaniasis (VL, also known as kala-azar), rates of co-infection with HIV and VL and the burden of post-kala-azar dermal leishmaniasis (PKDL). This report also describes the Kala-azar Elimination Programme in South-East Asia and adverse events after administration of antileishmanial drugs.
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This publication represents a key step forward in translating Control of the leishmaniases (WHO Technical Report Series, No. 949) into a more practical tool for health personnel directly involved in the case management of cutaneous leishmaniasis. With this manual, countries will have, for the first ...time, standardized diagnosis and treatment protocols, case definitions and indicators to enable them to easily track progress on cutaneous leishmaniasis case management across the Region. It will provide support to professionals in charge of cutaneous leishmaniasis, in order to alleviate the suffering of affected populations from this appalling disfiguring and stigmatizing neglected tropical disease.
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Despite the significant role of vector control in national leishmaniasis control programmes, the programmatic community perceives vector control as the weakest component of leishmaniasis control strategies in terms of resources, scientific evidence of the usefulness of interventions and capacity for... quality-assured implementation. Therefore, the main objective of this manual is to provide practical tools, techniques and procedures to strengthen sand fly control and surveillance in order to improve implementation of leishmaniasis control programmes. The manual provides a rationale for programme managers in different geographical regions on the types of vector control interventions to be used in different epidemiological and environmental settings and also how to measure their impact.
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Front Chem. 2021; 9: 622286.
Published online 2021 Mar 12. doi: 10.3389/fchem.2021.622286
This report provides a review and analysis of the research landscape for three diseases – Chagas disease, human African trypanosomiasis and leishmaniasis – that disproportionately afflict poor and remote populations with limited access to health services. It represents the work of the disease re...ference group on Chagas Disease, Human African Trypanosomiasis and Leishmaniasis (DRG3) which was established to identify key research priorities through review of research evidence and input from stakeholders' consultations.
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This technical report presents the epidemiology of human and animal leishmaniases in the EU and its neighbouring countries and concludes that the disease remains widespread and underreported in many countries of southern Europe, northern Africa, and the Middle East and that there is a need to improv...e leishmaniasis prevention and control based on robust surveillance in humans, animals, and vectors, and to increase public awareness following a one health approach.
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Guillain-Barre Syndrome (GBS) is an acute autoimmune polyradiculoneuropathy that often follows an antecedent infection. Leishmaniasis is a zoonosis due to a flagellate protozoan of the Leishmania genus and transmitted by the sandfly. Here we report a 15 years old teenager who presented with an ascen...ding installation of the motor deficit in three weeks associated with dysphonia and swallowing disorders. The physical examination showed a flaccid proximo-distal quadriparesis, akinesthesia, apallesthesia and cutaneous lesions on the forehead, wrist and calf that appeared two months earlier. The HIV serology was negative and cerebrospinal fluid examination was normal. The electroneuromyography showed a reduction in motor and sensitive amplitudes with an increase in distal latencies and F waves in the upper limbs and segmental and focal conduction blocks. Parasitological examination of the dermal juice around the edges of the skin lesions revealed amastigote forms of leishmaniasis. The evolution was favorable with only symptomatic treatment.
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This article considers the current public health perspective on cutaneous leishmaniasis (CL) and its implications for incidence, prevalence, and global burden of disease calculations. CL is the most common form of leishmaniasis and one of a small number of infectious diseases increasing in incidence... worldwide [1] due to conflict and environmental factors in the Middle East (“Old World”) and the Americas (“New World”)—regions where it is most prevalent.
Recently, the disease has reached hyperendemic levels in the conflict zones of the Syrian Arab Republic, Iraq, and Afghanistan while simultaneously affecting refugees from those regions . Nevertheless, CL is not seen as a priority for policymakers because it is not life limiting. This is evidenced by a lack of commitment in recent years to preventive campaigns and patient provision (limited diagnostic capacity, knowledge of treatment, drug availability) in a number
of endemic countries.
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American cutaneous leishmaniasis (CL) is a severely understudied and neglected“disease of poverty” widespread throughout Peru. Transmission dynamics of CL are complex, requiring sandfly vectors and mammalian reservoir hosts to maintain the pathogen in a local environment whereby incidental hosts... (people) can become infected. We employed a One-Health approach to understand CL transmission in rapidly changing region of northern Peru. We describe the characteristics of 529 CL positive patients from four participating clinics. Using conditional logistic regression, we assessed risk factors of CL for residents of small urban areas through a matched case-control study with 63 patients who had visited one of the same clinics for CL (cases) or other medical reasons (controls). We later enrolled 343 households as part of a community based study occurring in 15 urban and rural areas of Soritor. We
found 256 positive humans (n= 914) as tested via the Montenegro Skin Test; we found 11 positive dogs (n = 236) via an immunofluorescence antibody test. Our results suggest that most- if not all- of CL transmission is occurring in rural areas and that urban women and urban children engage in many high risk activities typically attributed to men. We find evidence that prevalence of past infection is highest among rural residents and men. We believe dogs are unlikely Leishmania reservoirs in either rural or urban settings. It remains unknown if the high number of MST positive children in rural areas is a result of peridomestic or intradomestic transmission.
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Website last accessed on 18.03.2023
WHO often receives requests from Member States and implementing partners to provide training in capacity‐building in endemic areas in order to better equip health personnel to diagnose, treat and control the disease.
Websites last accessed on 24.03.2023
Education and information about Leishmaniasis prevention and control.
Website last accessed on 14.04.2023
Health workers Luke (Kenya), Juliana (Colombia), and Shishu (India) share the same hope for their patients with leishmaniasis: simple, oral treatments. For the first time ever, it seems leishmaniasis research is moving from neglect to a sense of hope.
Last accessed on 14.05.2023
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MEDBOX Issue Brief no.35: The first issue brief on the NTD Toolbox contains general strategies, roadmaps, key treatment guidelines, reports, and training material on Buruli ulcer, Chagas, and Leishmaniasis.
During the Programme Managers’ Review Meeting of Central and East Africa and South-East Asia (online meeting, June 2022), experts proposed additional regional and national subtargets related to VL incidence, as defined below. These targets can be revisited as progress is reviewed and access to dia...gnosis and treatment and surveillance improves.
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