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
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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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A wide spectrum of disease severity has been described for Human African Trypanosomiasis (HAT) due to
Trypanosoma brucei rhodesiense (T.b. rhodesiense), ranging from chronic disease patterns in southern countries of East Africa to an increase in virulence towards the north. However, only limited d
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ata on the clinical presentation of T.b. rhodesiense HAT is available. From 2006-2009 we conducted the first clinical trial program (I MPAMEL III) in T.b. rhodesiense endemic areas of
Tanzania and Uganda in accordance with international standards (ICH-GCP). The primary and secondary outcome measures were safety and efficacy of an abridged melarsoprol schedule for treatment of second stage disease. Based on diagnostic findings and clinical examinations at baseline we describe the clinical presentation of T.b. rhodesiense HAT in second stage patients from two distinct geographical settings in East Africa.
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Localized cutaneous leishmaniasis and its evolving forms (diffuse cutaneous leishmaniasis, mucosal leishmaniasis and cutaneous leishmaniasis recidivans), together with the sequela of visceral leishmaniasis (post-kala-azar dermal leishmaniasis), account for about one million cases of dermal leishmani
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ases per year worldwide. Although not lethal, the dermal leishmaniases cause chronic, disfiguring skin lesions which are an important cause of morbidity and stigma.
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Leptospirosis is a zoonotic disease with epidemic potential, especially after a heavy rainfall,
caused by a bacterium called Leptospira. Leptospira interrogans is pathogenic to humans and
animals, with more than 200 serologic variants or serovars. Humans usually acquire
leptospirosis through dire
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ct contact with the urine of infected animals or a urine-contaminated
environment. Human-to-human transmission occurs only very rarely. Leptospirosis may present
with a wide variety of clinical manifestations, from a mild illness that may progress to a serious
and sometimes fatal disease. Its symptoms may mimic many diseases, such as influenza,
dengue and other viral haemorrhagic diseases; making the correct diagnosis (clinical and
laboratory) at the onset of symptoms is important to prevent severe cases and save lives,
primarily in outbreak situations.
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Lateral-flow rapid diagnostic tests (RDTs) continue to play a vital role in global health in the management and diagnosis of infectious diseases, including malaria, HIV and COVID-19. Visually interpreted RDTs, more than any other class of diagnostics, fulfil WHO’s ASSURED criteria,1 enabling their
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use at the lowest levels of health care and in self-testing.2 Their utility is, however, compromised every time a test is incorrectly performed or interpreted or its result is not available in a timely manner for clinical decisionmaking and surveillance.
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The new WHO recommendations for rabies immunization supersede the 2010 WHO position
on pre-exposure prophylaxis (PrEP) and post-exposure prophylaxis (PEP) for rabies. These updated
recommendations are based on new evidence and directed by public health needs that are cost-,
dose- and time-sparing
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, while assuring safety and clinical effectiveness. In addition, new guidance on
prudent use of rabies immunoglobulins (RIG) is provided.
The following sections summarize the main points of the updated WHO position as endorsed by the
Strategic Advisory Group of Experts on immunization (SAGE) at its meeting in October 20171. The full
version of the WHO position on rabies vaccines and immunoglobulins will be published in the Weekly
Epidemiological Record2 in April 2018.
Rabies prevention involves two main strategies: (i) dog vaccination to interrupt virus transmission to
humans; and (ii) human vaccination as a series of vaccine administrations before or after an exposure.
Currently, rabies vaccines made from inactivated cell cultures are extremely well tolerated and have no
contraindications.
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WASH in schools during a cholera response is important due to the strong correlation between WASH and IPC. Not only can it impact the health and well-being of students and staff but also facilitate the potential spread of the disease via the congregation of children and adults from multiple househol
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ds. Hygiene can often be more difficult to control with young children and therefore efforts to put in place systems to encourage good practices are essential.
To prevent the spread of cholera in schools, it is important to have clean and safe water sources, proper sanitation facilities, and good hygiene practices in place. This includes providing clean drinking water, hand-washing stations with soap, and education on hygiene and sanitation practices and implement Risk Communication and Community Engagement (RCCE) including dissemination of Information, Education and Communication materials (IEC).
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Glaucoma is a leading cause of irreversible blindness globally. In Malawi, glaucoma accounts for 15.8% of the blindness among people aged 50 years and above. Blindness from glaucoma is preventable with early detection and timely treatment. However, glaucoma management remains a challenge to eye care
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providers due to its asymptomatic progression.
These guidelines inform eye care providers about the requirements for early detection of glaucoma, and the appropriate assessment and management of glaucoma patients. The guidelines also demonstrate the need for ophthalmologists to work with secondary-level eye care providers. With
glaucoma being a permanently blinding condition, it is vital to ensure that all eye care providers are adequately equipped with skills and resources for the early detection and management of glaucoma.
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Report of a global meeting on yaws eradication surveillance, monitoring and evaluation: Geneva, 29–30 January 2018. World Health Organization.
This document outlines PAHO’s regional priorities for the year 2023 to sustain and scale up health emergency and humanitarian assistance in the Americas, with a focus on five priority countries currently facing a prolonged humanitarian crisis and recovering from recent acute emergencies: Colombia,
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El Salvador, Guatemala, Haiti, and Venezuela (Bolivarian Republic of). These goals align with and build on the World Health Organization’s Global Health Emergency Appeal for 2023, its principles, priorities, and strategies.
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The overall objective of the framework is to support WHO and Members States in meaningful engagement of people living with NCDs, and mental health and neurological conditions to co-create and enhance related policies, programmes and services. This framework will contribute to advancing understanding
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, knowledge and action on meaningful engagement and related participatory approaches from an evolving evidence base. It provides practical guidance and actions for transitioning from intention to action to operationalize meaningful engagement.
The aim of the framework is to guide people working at WHO and in Member States in ensuring meaningful engagement with individuals with lived experience. WHO will advocate for, provide technical assistance and operationalize implementation at its three levels (headquarters, regional and country offices) and will support Member States in implementation at national level through established processes and procedures.
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The identification of Priority Areas for Multisectoral Interventions (PAMIs, sometimes referred to as ‘hotspots’) for cholera control is among the first steps for a cholera-affected country to develop or revise a National Cholera Plan (NCP) for cholera control. PAMI identification is critical to
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maximize the potential impact of NCP implementation on cholera control.
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This report highlights the work of the World Health Organization (WHO) in Zimbabwe towards contributing to the triple billion targets in the context of the Sustainable Development Goals (SDGs
UNHCR invested significantly in risk mitigation, prevention and response to sexual exploitation and abuse (SEA) in the Europe region in 2022-2023, in particular in connection with the Ukraine emergency, where the risks were considered high due to the unprecedented scale and speed of displacement, mo
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stly women and children, combined with high turnover of humanitarian staff and the range of new and untraditional actors involved in the response. PSEA also remains a priority for UNHCR’s work for other refugees, internally displaced and stateless persons across the region.
This compilation highlights the 10 most promising practices that were initiated by UNHCR and its partners in the Europe region in 2022-2023. These practices are shared with the aim to inspire further work on PSEA in the region and elsewhere and encourage continuous learning and exchange.
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I examine the effectiveness of donors in targeting the highest burden of malaria in the Democratic Republic of Congo when health information structure is fragmented. I exploit local variations in the burden of malaria induced by mining activities as well as financial and epidemiological data from he
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alth facilities to estimate how local aid is matching local health needs. Using a regression discontinuity design, I find significant but quantitatively small variations in aid to health facilities located within mining areas. Comparing local aid with the additional cost of treatment and prevention associated with the increased risk of malaria transmission, I find suggestive evidence that local populations with the highest burden of the disease receive a proportionately lower share of aid compared to neighbouring areas with reduced exposure to malaria infection. The evidence of disparities in the allocation of aid for malaria supports the view that donors may have inaccurate information about local population needs.
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Anopheles stephensi is a mosquito species that is capable of transmitting both Plasmodium falciparum and P. vivax malaria parasites. Unlike the other main mosquito vectors of malaria, it thrives in urban and man-made environments. Originally native to parts of South Asia and the Arabian Peninsula, A
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n. stephensi has been detected, to date, in 7 countries in the African continent.
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Ethiopia faces unprecedented public health risks with over 17.4 million people in need of health assistance due to a compounded security, epidemiological, environmental and socio-economic hardships throughout the country. Specifically, the prolonged drought and localized conflicts have negatively im
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pacted public health systems, whose access has become severely hindered because of physical constraints, infrastructure, equipment damages, lack of available healthcare workforce and negative coping mechanisms resulting from livelihoods deterioration. Whereas the World Health Organization (WHO) assistance has been critical to coordinate humanitarian efforts in affected areas, additional efforts are required in the coming months to address ongoing epidemic outbreaks and support the recovery process in conflict-affected areas (Afar, Amhara, Tigray and Gambelia) that are now accessible.
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Hypertension is referred to as a “silent killer”. Most people with hypertension are unaware of their condition as in most cases, they experience no warning signs or symptoms hence they are not identified or treated. Hypertention is associated with a number of conditions, disability, and causes o
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f death. These include: strokes; myocardial infarction; end-stage renal disease; congestive heart failure; peripheral vascular disease and blindness. According to Stats SA, in 2017, hypertensive disorders resulted in 19 900 deaths with a further 44 357 deaths associated with cerebrovascular diseases and other heart diseases. This means around 30% of all deaths in 2017 were associated with increased blood pressure.
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Atherosclerotic lower-extremity peripheral artery disease (PAD) is increasingly recognized as an important cause of cardiovascular morbidity and mortality that affects more than 230 million people worldwide. Traditional cardiovascular risk factors, including advanced age, smoking, and diabetes, are
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strongly linked to an increase risk of PAD. Although PAD has been historically underappreciated compared to coronary artery disease and stroke, greater attention on PAD in recent years has led to important new epidemiologic insights in the areas of thrombosis, inflammation, dyslipidemia, and microvascular disease. In addition, the concept of polyvascular disease, or clinically-evident atherosclerosis in multiple arterial beds, is increasingly identified as a particularly malignant cardiovascular disease worthy of special clinical attention and further study. It is noteworthy that PAD may increase the risk of adverse outcomes in similar or even greater magnitude than coronary disease or stroke. In this review, we highlight important new advances in the epidemiology of PAD with a particular focus on polyvascular disease, emerging biomarkers, and differential risk pathways for PAD compared to other atherosclerotic diseases.
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Buruli ulcer (BU) is a bacterial skin infection that is caused by Mycobacterium ulcerans and mainly affects people who reside in the rural areas of Africa and in suburban and beach resort communities in Australia.