Abstract: Chagas disease is caused by infection with the protozoan Trypanosoma cruzi, and although over 100 years have passed since the discovery of Chagas disease, it still presents an increasing problem for global public health. A plethora of information concerning the chronic phase of human Chaga...s disease, particularly the severe cardiac form, is available in the literature. However, information concerning events during the acute phase of the disease is scarce. In this review, we will discuss the current status of acute Chagas disease cases globally, the immunological findings related to the acute phase and their possible influence in disease outcome, and reactivation of Chagas disease in immunocompromised individuals, a key point for transplantation and HIV invection management.
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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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About six to seven million people worldwide, mostly in Latin America, are estimated to be infected with
Trypanosoma cruzi, the parasite that causes Chagas disease (WHO data from 2021). Chagas disease is
found mainly in endemic areas of 21 Latin American countries. Chagas disease was once entirely
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confined to rural areas but in the last decades, due to population movements, most infected people live
in urban settings and the disease has spread to other continents. The burden of disease is due to its
chronic progression with people still suffering years later after initial infection.
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This guideline for the prevention and control of chikungunya fever
(CF) is intended for use by all peripheral health workers in the Region and
is based on the strategy outlined above. This document will focus mainly
on preventing, predicting and detecting outbreaks, and after detection,
investig...ating and containing them.
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Revised and expanded version of the Guidelines
Chagas disease (CD) is endemic in the Americas, being present in 21 countries, where it affects about 6 million
people.(1) With such relevant numbers of people affected and disability adjusted life years lost, CD is a poverty-related
and poverty-promoting disease.
Although data describe a relevan...t ongoing public health problem for the American continent, significant results
in the interruption of transmission has been achieved by coordinated multi-country programs. In particular, the
Southern Cone Initiative (SCI), officially formalised in November 1991 by the Ministers of Health of Argentina, Brazil, Bolivia, Chile, Paraguay and Uruguay, has shown how a well-designed control program can significantly reduce
CD transmission.(2) Before this initiative, in these countries, there were 11 million infected persons and 50 million at
risk, 62% of the infected individuals of the whole continent.
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Anopheles stephensi, a highly competent vector of Plasmodium falciparum and P. vivax, is considered an efficient vector of urban malaria. Until 2011, the reported distribution of An. stephensi was confined to certain countries of South Asia and parts of the Arabian Peninsula. Since then, the vector ...has been collected in Djibouti (2012), Ethiopia (2016), Sudan (2016), Sri Lanka (2017), Somalia (2019), and most recently Nigeria (2020) and Yemen (2021). WHO considers the spread of An. stephensi to be a major potential threat to malaria control and elimination in Africa and southern Asia and has recently launched an initiative against the spread of this vector in Africa.
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Dracunculiasis (Guinea worm disease), caused by the parasite Dracunculus medinensis, is traditionally acquired by drinking water containing copepods (water fleas) infected with D. medinensis larvae, but in recent years also appears increasingly to be transmitted by eating fish or other aquatic anima...ls. The worm typically emerges through the skin on a lower limb of the host 1 year after infection, causing pain and disability.
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Yaws is a disfiguring non-venereal disease caused by infection with the spirochaete. Treponema pallidum subspecies pertenue which is closely related to the causative agent of syphilis and those of the other endemic treponematoses, bejel and pinta. The disease is endemic in certain areas of the World... Health Organization (WHO) African, South-East Asia and Western Pacific regions. Of the neglected tropical diseases identified for elimination and eradication, yaws is one of two diseases targeted for eradication. In 1949, the Second World Health Assembly adopted resolution WHA2.36, which addresses yaws, bejel and pinta as major public health problems that need attention.
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This brochure presents a summary of the situation of health systems and services in the Americas as they progress toward the achievement of universal access to health and universal health coverage (universal health). The information provided presents an overview of the situation before the COVID-19 ...pandemic, how the pandemic has impacted health systems, and recommendations to address current and future challenges for building resilient health systems to advance toward universal health in the Americas.
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An interregional meeting on leishmaniasis among neighbouring endemic
countries in the Eastern Mediterranean, African and European regions was organized by the World Health Organization (WHO) Regional Office for the Eastern
Mediterranean in Amman, Jordan, from 23 to 25 September 2018. The meeting w...as attended by representatives from the health ministries of Albania, Georgia, Greece, Iran (Islamic Republic of), Iraq, Jordan, Lebanon, Morocco, Pakistan, Saudi Arabia, Sudan, Syrian Arab Republic and Tunisia. Representatives from Afghanistan, Algeria and Libya were unable to attend. The Secretariat comprised staff from WHO headquarters, WHO regional offices in the Eastern Mediterranean, Africa and Europe, WHO country offices in Iraq, Pakistan, Syrian Arab Republic and Yemen, and WHO temporary advisors from Spain and Tunisia.
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Human rabies remains a significant public health problem in Africa with outbreaks reported in most countries. In Nigeria–the most populous country in Africa–rabies causes a significant public health burden partly due to perennial obstacles to implementing a national prevention and control progra...m.
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WHO strongly recommends discontinuation of the nerve tissue vaccine, and replacement with modern concentrated and purified cell culture derived vaccines (CCDV) and embryonated eggbased rabies vaccines.
These vaccines must comply with WHO criteria for potency and innocuity following satisfactory ass...essment in humans during well-designed field trials
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The Pharmaceutical Forum of the Americas (PFA) has previously published guidelines and organised campaigns for community pharmacists on the prevention, detection and control of arbovirus infections in 2018 with a grant from the FIP Foundation for Pharmacy Education and Research. Building on that exp...ertise, FIP joined efforts with the PFA and is now publishing its first-ever handbook to support pharmacists in the
area of vector-borne diseases. As the integration of the regional forums in FIP advances, such collaborative projects are tangible results of an increasingly regionally informed and regionally targeted work by FIP.
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Lymphatic filariasis, commonly known as elephantiasis, is a neglected tropical disease. Infection occurs when filarial parasites are transmitted to humans through mosquitoes. When a mosquito with infective stage larvae bites a person, the parasites are deposited on the person’s skin from where the...y enter the body. The larvae then migrate to the lymphatic vessels where they develop into adult worms in the human lymphatic system.
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This fourth WHO report on neglected tropical diseases (NTDs) reviews the progress made towards achieving the Roadmap targets for 2020, noting the remaining challenges, then looks beyond 2020 to evaluate the changing global health and development landscape, considering the implications of integrating... these diseases into the broader 2030 Agenda for Sustainable Development.
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The Bolivarian Republic of Venezuela has been facing a prolonged socio-political and economic situation that has profoundly and negatively impacted social and health indicators. The COVID-19 pandemic further aggravated the humanitarian context in the
country, which stretched the limits of an alread...y weakened national health system. Violence and social conflicts, hyperinflation, constant political tensions, the persistence of migratory movements, and intensification of climate threats and natural hazards
have worsened the living conditions and health status of populations in vulnerable situations, including women, children, and indigenous people. A large influx of returnees back to Venezuela (Bolivarian Republic of) marked the first
two years of the pandemic. However, the country’s continued deteriorating political, socio-economic, and human rights situation resulted in renewed increased migration of Venezuelans in 2022. The profile of Venezuelan migrants has progressively changed
over the years, from single men in search of better economic opportunities to families with women and children in situations of extreme vulnerability. The increasingly irregular and unsafe journeys of those migrants are constantly putting their lives at high risk
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Colombia is characterized by a fragile and prolonged humanitarian context marked by recurrent multi-hazards affecting its territories and combined with severe structural and systemic challenges within the health system. Recent shocks, including the
COVID-19 pandemic, growing violence within the Col...ombian territories and along the border with Venezuela (Bolivarian Republic of), and repetitive hydro-meteorological disasters over the last 12 months aggravate such chronic challenges.
In 2022, the number of people in need of humanitarian assistance increased by 300 000 due to deteriorating indicators of maternal and child mortality, pregnancy in adolescent girls, human immunodeficiency virus (HIV), suicides, sexually transmitted
infections (STIs), gender-based and sexual violence, and communicable diseases. increasing population trends, primarily due to mass migration movements and the persistence of armed conflicts, create access barriers to essential health services, mobility restrictions, and forced displacement, further impacting the health, lives, and well-being of populations in vulnerable situations. In many territories, geographical distance to health facilities and attacks against medical missions hinder providing appropriate healthcare.
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Geneva, 22 May 2023 – Gavi, the Vaccine Alliance today published a roadmap* outlining critical actions needed to ensure supply of oral cholera vaccine (OCV) is able to meet growing demand from countries. Released against a backdrop of a recent wave of cholera outbreaks around the world, the roadma...p forecasts the short-, mid- and long-term outlook for global cholera vaccine supply. Developed in consultation with a range of key Alliance partners, including WHO, UNICEF, the Global Taskforce for Cholera Control (GTFCC), and the Bill and Melinda Gates Foundation (BMGF), it describes how these organizations, manufacturers and countries can work together towards ensuring global OCV supply can support largescale preventive vaccination by 2026.
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Many of the countries that faced cholera outbreaks in 2022 were badly affected by extreme weather events.
As the climate emergency worsens, human displacement will intensify, along with droughts and flooding – all
conditions that give rise to cholera outbreaks. Unless we invest in systems that b...uild preparedness and
resilience among at-risk populations, the cholera burden will continue to rise
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