Nearly 260 000 people died in parts of Somalia between October 2010 and April 2012, including
133 000 children under five during the famine and food crisis in Somalia making it the worst famine in history.
A study commissioned and funded by the Food and Agriculture Organization of the United Natio...n’s food security and nutrition analysis unit for Somalia stated that the famine early warning systems clearly identified the risk of famine in South Central Somalia in 2010–2011 but timely action to prevent the onset of famine was not taken. The result was large scale
mortality, morbidity and population displacement.
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Infections by the soil-transmitted helminths (STH), including Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale/Necator americanus (hookworms), and Strongyloides stercoralis, disproportionately affect children around the world. Because of their transmission associated with poor sanita...ry conditions and inadequate hygiene practices, higher burden of disease is seen in children from developing countries from sub-Saharan Africa, Southeast Asia, and Latin America. Approximately 267 million preschool-age children (PSAC) and 568 million school-age children (SAC) worldwide are at risk of STH infection as well as impaired child growth and cognitive development from A. lumbricoides, T. trichiura, and hookworm infections, and death due to severe S. stercoralis infection. Thus, their control is a global health priority.
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The epidemiology of the disease is mediated by the interaction of the parasite (trypanosome) with the vectors (tsetse flies), as well as with the human and animal hosts within a particular environment. Related to these interactions, the disease is confined in spatially limited areas called “foci..., which are located
in Sub-Saharan Africa, mainly in remote rural areas. The risk of contracting HAT is, therefore, determined by the possibility of contact of a human being with an infected tsetse fly. Epidemics of HAT were described at the beginning of the 20th century; intensive activities have been set up to confront the disease, and it was under control in the 1960s, with fewer than 5,000 cases reported in the whole continent.
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Rabies is a fatal viral disease, but is preventable in humans. The rabies virus is transmitted to humans through virus-laden saliva from a rabid animal, mostly dogs. The virus is shed in the saliva of an infected animal and can be introduced into another body through bites, scratches and any other ...wounds that transect the skin. Contact of the infected saliva with mucous membranes is also thought to be a possible route of infection, whereas contact of infected saliva with intact skin is not considered an exposure. Rabies is preventable through pre-exposure prophylaxis (PrEP) for individuals at high and continual risk, and post-exposure prophylaxis (PEP).
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Rabies is a fatal viral zoonosis and serious public health problem.1 All mammals are believed to be susceptible to the disease, and for the purposes of this document, use of the term animal refers to mammals. The disease is an acute, progressive encephalitis caused by viruses in the genus Lyssavirus....
2 Rabies virus is the most important lyssavirus globally. In the
United States, multiple rabies virus variants are maintained in wild mammalian reservoir populations such as raccoons, skunks, foxes, and bats. Although the United States has been declared free from transmission of canine rabies virus variants, there is always a risk of reintroduction of these variants.The rabies virus is usually transmitted from animal to animal through bites. The incubation period is
highly variable. In domestic animals, it is generally 3 to 12 weeks, but can range from several days to months, exceeding 6 months.8 Rabies is communicable during the period of salivary shedding of rabies virus. Experimental and historic evidence documents that dogs, cats, and ferrets shed the virus for a few days prior to the onset of clinical signs and during illness. Clinical signs of rabies are variable and include inappetance, dysphagia, cranial nerve deficits, abnormal behavior, ataxia, paralysis, altered vocalization, and seizures. Progression to death is rapid. There are currently no known effective rabies antiviral drugs.
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Soil-transmitted helminths (STH) affect 1.45 billion people worldwide, and high intensity infections are associated with anemia, undernutrition and impaired cognition, particularly among children. Mathematical models suggest it may be possible to interrupt the transmission of STH in a community by e...xpanding mass drug administration (MDA) from targeted high-risk groups (primarily school-aged children and women of child-bearing age) to all community members with high coverage. The DeWorm3 Project will test the feasibility of this approach to interrupting the transmission of STH using a series of cluster randomized trials in Benin, India and Malawi. Each study area (population 80,000) will be divided into 40 clusters and randomized to community-wide or standard-of-care targeted MDA for three years. Two years following the final round of MDA, prevalence of STH will be compared between arms and transmission interruption assessed in each cluster. The DeWorm3 trials will provide stakeholders with information regarding the potential to switch from STH control to a more ambitious and sustainable strategy.
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Cutaneous leishmaniasis (CL) is a parasitic disease caused by infection with a vector-borne protozoan parasite of the genus Leishmania spp. The parasite is transmitted by the bite of an infected phlebotomine sand fly. Infection results in skin lesions which take a long time to heal and may leave per...manent, disfiguring scars (de Vries et al. 2015). CL is classified as a neglected tropical disease (NTD), and in common with several other NTDs, is associated with psychosocial effects including stigma, social exclusion, and declining mental health (Bailey et al. 2019; Bennis et al. 2018; Wenning et al. 2022). Emerging evidence suggests that people with CL are at a higher risk of experiencing anxiety, depression, decreased body satisfaction, loss of social status, and lower quality of life (Bennis et al. 2018; Yanik et al. 2004). The global mean age-standardised disability-adjusted life years (DALYs) lost by CL was 0.58 per 100,000 people (Karimkhani et al. 2016). Notably, this statistic only considers the physical effects of the lesions and does not account for the potentially considerable psychological and social effects of CL (Bailey et al. 2017; Bailey et al. 2019; Wenning et al. 2022).
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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...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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We developed an integrated vector surveillance (IVS) proposal for cutaneous leishmaniasis (CL) and visceral leishmaniasis (VL) in the Americas, based on eco-epidemiological studies conducted by researchers of the Leishmaniasis Research Network of Argentina. For CL, the transmission was explained in ...the framework of the edge effect, the increase of vectors and risk of exposure at ecotones and environmental interfaces, and typified as ephemeral, transient, or permanent edges, supporting a cost-effective IVS strategy for early warning of CL outbreaks through an environmental modification alert network, which includes multiple sources of information and actors. In relation to VL, the earliest colonization sites and spatial distribution were explained by modeling and forecasting the most likely hotspots, persistent in time and space, and modulated by environmental variables. Therefore, for VL, a scalar strategy of critical site selection is proposed from a “city” scale based on secondary sources such as remote sensing for the definition of possible areas to monitor and intervene, a scale of restriction from possible to most likely areas through local knowledge, and a “focal site” scale of trap placement through field observation; in this way, IVS activities are carried out at a few sites of the urban landscape and allow a sustainable program.
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The war has not only triggered the largest movement of refugees in Europe since the end of the Second World War.
Its manifold effects can be seen worldwide: forexample, consumer prices have risen and, in view of blocked grain exports of wheat, barley, and maize, food security in Africa is at ...class="attribute-to-highlight medbox">risk. This issue brief summarizes the impact the conflict has and had on global food security.
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Diabetes mellitus (DM) is a global epidemic with significant morbidity. Diabetic
retinopathy (DR) is the specific microvascular complication of DM and affects 1 in 3 persons with DM. DR remains a leading cause of vision loss in working adult populations. Patients with severe levels of DR are report...ed to have poorer quality of life and reduced levels of physical, emotional, and social well-being, and they utilize more health care resources.
Epidemiological studies and clinical trials have shown that optimal control of blood glucose, blood pressure, and blood lipids can reduce the risk of developing retinopathy and slow its progression. Timely treatment with laser photocoagulation, and increasingly, the appropriate use of intraocular administration of vascular endothelial growth factor (VEGF) inhibitors can prevent visual loss in vision- threatening retinopathy, particularly diabetic macular edema (DME). Since visual loss may not be present in the earlier stages of retinopathy, regular screening of persons with diabetes is essential to enable early intervention.
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Since the launch of the Global Programme to Eliminate Lymphatic Filariasis (GPELF) in 2000, more than 910 million people have received preventive chemotherapy for lymphatic filariasis (LF) and many thousands have received care for chronic manifestations of the disease. To achieve this, millions of c...ommunity drug distributors (CDDs), community members and health personnel have worked together each year to ensure that at-risk communities receive preventive chemotherapy through mass drug administration (MDA). The successes of 20 y of partnership with communities is celebrated, including the application of community-directed treatment, the use of CDDs and integration with other platforms to improve community access to healthcare. Important challenges facing the GPELF moving forward towards 2030 relate to global demographic, financing and programmatic changes. New innovations in research and practice present opportunities to encourage further community partnership to achieve the elimination of LF as a public health problem. We stress the critical need for community ownership in the current Covid-19 pandemic, to counter concerns in relaunching MDA programmes for LF.
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Dengue is a mosquito-borne viral infection causing a severe flu-like illness and, sometimes causing a potentially lethal complication called severe dengue. The incidence of dengue has increased 30-fold over the last 50 years. Up to 50-100 million infections are ...now estimated to occur annually in over 100 endemic countries, putting almost half of the world’s population at risk.
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Infertility is a disease of the male or female reproductive system defined by the failure to achieve a pregnancy after 12 months or more of regular unprotected sexual intercourse. Understanding the magnitude of infertility is critical for developing appropriate interventions, for monitoring access t...o quality fertility care, and for mitigating risk factors for and consequences of infertility.
The objective of this report is to provide estimates of the global and regional prevalence of infertility by analyzing all relevant and representative studies from 1990 to 2021, taking into account different study approaches. This report also provides insight into how the estimation of infertility prevalence can be improved to obtain more reliable and actionable data. These estimates improve the understanding of the burden of infertility, and provide a basis for appropriate policies and services to achieve universal access to fertility care for all.
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Each humanitarian setting provides distinct opportunities and challenges for actors to coordinate and collaborate at strategic and operational levels. The Health and Protection Joint Operational Framework has been developed to ensure that the health and protection response during humanitarian emerge...ncies can adapt to each environment and is adequately coordinated to ensure high-quality services to meet the needs of affected individuals and at-risk groups based on their situation or vulnerabilities.
The Health and Protection JOF was conceived in 2019 as a collaboration between the Global Health Cluster (GHC), the Global Protection Cluster (GPC) and its Areas of Responsibility (AoRs), the Inter-Agency Standing Committee Reference Group on Mental Health and Psychosocial Support in Emergency Settings (IASC MHPSS RG), and the Inter-Agency Working Group for Reproductive Health in Crisis (IAWG), in addition to key technical experts.
A Steering Group (SG) comprised of representatives from each of these entities guided the framework through a joint global analysis of good practices, gaps, and barriers to integrated and inter-sectoral response coordination. This included a mixed methods review of policy and practice, a survey of humanitarian experts, multiple case studies, structured stakeholder interviews, and field visits. This exercise produced a zero-draft which was then reviewed by field practitioners in three operational contexts to clarify and fully coordinate its operationally focused lens. Finally, the JOF was reviewed by the SG including via a series of consultations in early 2023 to consolidate the current framework.
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There has been important progress for the rights of adolescent girls and women in recent decades, yet millions still struggle to
access the nutritious diets, essential nutrition services and nutrition and care practices they need to prevent malnutrition.
Undernutrition, micronutrient deficiencies ...and anaemia amplify gender inequalities by lowering learning potential, wages and life opportunities for adolescent girls and women, weakening their immunity to infections, and increasing their risk of lifethreatening complications during pregnancy and childbirth.
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Recovery from COVID-19 has been challenging in Guatemala. As a result of the prolonged socio-economic impact of the pandemic, the average poverty rate nationwide has increased by almost 5%. This rise in the poverty level further exacerbates preexisting vulnerabilities and erodes the limited safety n...ets available to vulnerable populations. Year after year, recurrent disasters and humanitarian crises aggravate the historic social gaps that result in high levels of vulnerability, multidimensional poverty, and overall deprivation of essential services among hundreds of thousands of Guatemalans. According to the World Risk Report 2020, Guatemala is the tenth country with the highest level of exposure to disaster worldwide. Globally, it ranks 28th regarding vulnerability according to the 2021 INFORM’s risk index and 62nd in the Global Climate Risk Index 2021.
In 2020, Guatemala faced a record-breaking and devastating hurricane season with extreme rainfall, catastrophic winds, and deadly landslides, from which the country has not yet recovered. Unfortunately, recurrent extreme weather events, such as Hurricane Julia that hit Central America in early October 2022, progressively but deeply eroded a weak health infrastructure and local health systems.
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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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Hypertension, or high blood pressure, is a condition which generally has no symptoms and if left untreated, can lead to heart attacks, heart failure, stroke, kidney failure and blindness. Risk factors include older age, overweight or obesity, lack o...f physical activity, high salt/sodium intake, and high alcohol intake.
Hypertension affects around 1 in 6 adults in the Americas and is the main risk factor for cardiovascular diseases, which are the leading cause of death in the region, responsible for around 2 million lives lost each year.
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Leishmaniasis is a vector-borne tropical/subtropical disease caused by an intracellular parasite transmitted to humans by sand fly bite. It is endemic in Asia, Africa, the Americas, and the Mediterranean region. Worldwide reports include 1.5–2 million new cases each year, more than 300 million at ...risk of acquiring the disease, and 70,000 deaths per year. Clinical features depend on the Leishmania species and immune response of the host, varying from localized cutaneous disease to visceral form with potentially fatal outcome; however, the common presentation is either cutaneous, mucocutaneous, or visceral leishmaniasis. Many therapeutic agents are being used in Leishmania treatment, but the only effective treatment is achieved with current pentavalent antimonials. WHO considers Leishmaniasis as one of the “Neglected Tropical Diseases” that continues to be prevalent despite international, national, and local efforts towards its control and elimination over the last decade. This chapter reviews the global perspective of Leishmaniasis with increasing recognition of emerging “Atypical forms” and new surge of disease across the world mainly due to increasing conflicts in endemic areas leading to forced migration among other causes. All these challenges related to environment, disease, and vector pose major implications on WHO’s leishmaniasis control and elimination plan.
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