DHS Analytical Studies No. 36
An IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems
As more frequent droughts and floods threaten the global food supply, humans are increasing their demands on water and land,... The New York Times reports.
Data from the Intergovernmental Panel on Climate Change report:
• 500 million people are living in areas that are becoming desert.
• Soil is depleted at 10X-100X the rate it’s being formed.
• More than 10% of the global population is undernourished.
Major threats include the risk of “multi-breadbasket failure”—simultaneous food crises on several continents—and migration triggered by food shortages.
Good News/Bad News: Catastrophe can be avoided, but it would require massive changes to agriculture, food systems and behavior.
A Key Action: Eat less meat. Cattle production is driving deforestation, consuming huge amounts of water, generating methane and causing other impacts, notes Nature.
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Despite growing evidence on the impact of psychosocial support interventions, there is an urgent need for a stronger evidence base on approaches that effectively support children affected by armed conflict. To contribute to this evidence base, and building on a pilot study conducted in Uganda in 200...9, War Child conducted an exploratory outcome evaluation of its psychosocial support intervention ‘I DEAL’ in South Sudan and Colombia in 2012. The objective of the evaluation was to explore the outcomes that I DEAL achieves for children and the factors that influence the achievement of those outcomes to further inform and strengthen the intervention
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The National Strategy for Natural Disaster, Prevention, Response and Mitigation to 2020, which outlines Vietnam’s main disaster risk management objectives and the National Target Program (NTP) form the overarching policy framework for disaster risk management and climate change adaption activities.... The CCFSC’s main mandate is to translate this strategy into action. Other decrees and laws are also complementary. The Government of Vietnam has prioritized disaster preparedness, recognizing that the most cost-effective measures to mitigate flood related disasters are often non-structural. These measures include flood mapping, river flood warning systems, television-based disaster information and warning systems, training at all government and grassroots levels on disaster preparedness, and reforestation of certain areas. Land use and development have also been addressed through government regulations.
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Timor-Leste’s vulnerability to natural hazards means if particular care is not taken in the development of the country’s infrastructure, it will remain at risk to disruption.
Timor-Leste developed the 2008 National Disaster Risk Management Policy, which lays out the government’s vison of ...its disaster management process from the national to the village level. Additionally, through the United Nations Development Program (UNDP), they have conducted national hazards, vulnerability and risk assessments. Through Plan International they have initiated the integration of disaster management education into public schools. Although the Government of Timor-Leste considers DRM as a priority and supports the dissemination of DRM policy to the district levels, the current Strategic Development Plan 2011-2030 of Timor-Leste has not explicitly reflected nor integrated DRM as one of its development priorities. Disaster Management is included in the Strategic Plan Document of MSS 2009-2012.
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The uneven distribution of HIV risks and burdens across populations is a well-substantiated fact, though seldom publicly acknowledged. Gay men and other men who have sex with men, people who inject drugs, sex workers, and transgender women are 24, 24, 13.5, and 49 times more likely to acquire HIV, ...respectively, than other reproductive aged adults (15 years old and older). Globally, new infections among these key populations account for 45% of all new HIV infections. This figure is likely to be an underestimate, given the intense stigma associated with disclosing and reporting acquisition risks for HIV among gay men, people who use drugs, sex workers, and transgender people. In addition, HIV epidemics in the majority of low- and middle-income countries (90 of 120) have concentrated epidemics among key populations. In countries with more broadly generalized epidemics, risks are still not evenly distributed and key populations still shoulder disease burden that is markedly disproportionate.
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The Philippine Government, International Non-government Organizations (INGOs) and local NGOs are all making attempts to address the impact of disasters and climate change at various levels. The Philippine Government has made significant strides in the implementation of disaster risk reduction (DRR) ...planning and activities through the development of the National Disaster Risk Reduction and Management Council (NDRRMC) which acts as the lead agency for DRR in the Philippines. The disaster focal points are the NDRRMC and the Office of Civil Defence (OCD). The Department of Social Welfare and Development (DSWD) is responsible for leading immediate disaster relief efforts.
The Armed Forces of the Philippines (AFP) is a primary responder in disasters and have been deployed frequently to several disaster relief operations in the country in recent years. The Philippines has endured disasters that involve national and international assistance.
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Lao People’s Democratic Republic (Lao PDR), also referred to as Laos, or Lao, is exposed to natural disasters such as flooding, typhoons, cyclones, drought, and earthquakes. The country is vulnerable to recurrent, sudden-onset and slow onset natural disasters with flooding, storms and typhoons hav...ing a large effect on the population. The country remains highly vulnerable to agricultural shocks and natural disasters.
Lao has established Community Based Disaster Risk Reduction (CBDRR) practices as a result of the many natural disasters the country faces. CBDRR is implemented at the village level to enhance community preparedness and to decrease village vulnerabilities to disasters.
Lao established the National Disaster Management Committee (NDMC) as its national disaster management platform and the National Disaster Management Office (NDMO) to be responsible for DRM (Disaster Risk Management) and DRR activities in the country.
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An estimated 99% of children worldwide – or more than 2.3 billion children – live in one of the 186 countries that have implemented some form of restrictions due to COVID-191. Although children are not at a high risk of direct harm from the virus, they are disproportionately affected by its hid...den impacts.
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39 examples of field practices, and learnings from 20 countries, for all phases of humanitarian response. The report shows that deliberate and proactive action is required to ensure that persons with disabilities from all constituencies are systematically included and meaningfully participate in DRR... and humanitarian preparedness, response and recovery. It draws lessons from field practices, but does not provide technical guidance. The newly published IASC Guidelines are the reference document to seek in-depth theoretical and technical information.
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Interconnected Disaster Risks is a new science-based report for the general public from United Nations University – Institute for Environment and Human Security. It was first published in 2021, and is set to become an annual report.
Proc Natl Acad Sci U S A v.110(21); 2013 May 21 PMC3666729 ;
A systematic review was conducted by a multidisciplinary team to analyze qualitatively best available scientific evidence on the effect of agricultural intensification and environmental changes on the risk of zoonoses for which there are... epidemiological interactions between wildlife and livestock.
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Published: November 24, 2020 https://doi.org/10.1371/journal.pbio.3000938
Climate change is expected to have complex effects on infectious diseases, causing some to increase, others to decrease, and many to shift their distributions. There have been several important advances in understanding the ...role of climate and climate change on wildlife and human infectious disease dynamics over the past several years. This essay examines 3 major areas of advancement, which include improvements to mechanistic disease models, investigations into the importance of climate variability to disease dynamics, and understanding the consequences of thermal mismatches between host and parasites. Applying the new information derived from these advances to climate–disease models and addressing the pressing knowledge gaps that we identify should improve the capacity to predict how climate change will affect disease risk for both wildlife and humans.
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Dengue is a mosquito-borne viral disease that occurs mainly in the tropics and subtropics but has a high potential to spread to new areas. Dengue infections are climate sensitive, so it is important to better understand how changing climate factors affect the potential for geographic spread and futu...re dengue epidemics. Vectorial capacity (VC) describes a vector's propensity to transmit dengue taking into account human, virus, and vector interactions. VC is highly temperature dependent, but most dengue models only take mean temperature values into account. Recent evidence shows that diurnal temperature range (DTR) plays an important role in influencing the behavior of the primary dengue vector Aedes aegypti. In this study, we used relative VC to estimate dengue epidemic potential (DEP) based on the temperature and DTR dependence of the parameters of A. aegypti. We found a strong temperature dependence of DEP; it peaked at a mean temperature of 29.3°C when DTR was 0°C and at 20°C when DTR was 20°C. Increasing average temperatures up to 29°C led to an increased DEP, but temperatures above 29°C reduced DEP. In tropical areas where the mean temperatures are close to 29°C, a small DTR increased DEP while a large DTR reduced it. In cold to temperate or extremely hot climates where the mean temperatures are far from 29°C, increasing DTR was associated with increasing DEP. Incorporating these findings using historical and predicted temperature and DTR over a two hundred year period (1901-2099), we found an increasing trend of global DEP in temperate regions. Small increases in DEP were observed over the last 100 years and large increases are expected by the end of this century in temperate Northern Hemisphere regions using climate change projections. These findings illustrate the importance of including DTR when mapping DEP based on VC.
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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
...
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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Type 2 diabetes mellitus (T2DM) is a chronic condition characterized by insulin resistance and an inability to properly regulate blood sugar levels. The two most important risk factors for T2DM are a family history of diabetes and obesity, though age, race, diet, and exercise level also impact risk.... Common symptoms include frequent urination, nerve damage, and dark skin patches. Treatment involves lifestyle changes like diet and exercise as well as medications like metformin, which improves insulin sensitivity and decreases glucose production in the liver. Patients are counseled on managing diabetes-related risks and provided support through organizations and groups.
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Severe and difficult asthma in a low- and middle-income country (LMIC) can relate to lack of availability of basic medications; potentially reversible factors such as poor adherence or comorbidities such as obesity inhibiting a good response to treatment; and (rarely) true severe, therapy-resistant ...asthma. However, definitions of severity should encompass not merely doses of prescribed medication, but also underlying risk. The nature of asthmatic airway disease shows geographical variation, and LMIC asthma should not be assumed to be phenotypically the same as that in high-income countries (HICs). The first assessment step is to ensure another diagnosis is not being missed. Largely, political action is needed if children with asthma are to get access to basic medications. If a child is apparently not responding to low dose, simple medications, the next step is not to increase the dose but perform a detailed assessment of what factors (for example co-morbidities such as obesity, or social factors like poor adherence) are inhibiting a treatment response; in most cases, an underlying reason can be found. An assessment of risk of future severe asthma attacks, side-effects of medication and impaired lung development is also important. True severe, therapy-resistant asthma is rare and there are multiple underlying molecular pathologies. In HICs, steroid-resistant eosinophilia would be treated with omalizumab or mepolizumab, but the cost of these is prohibitive in LMICs, the biomarkers of successful therapy are likely only relevant to HICs. In LMICs, a raised blood eosinophil count may be due to parasites, so treating asthma based on the blood eosinophil count may not be appropriate in these settings.
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In 2014, the International Study of Asthma and Allergies in Childhood (ISAAC) reported that the highest prevalence of symptoms of severe asthma was found in the low- and middle-income countries (LMICs), including Nigeria. While exposure to biomass fuel use may be an important risk factor in the deve...lopment of asthma, its association with asthma symptoms severity has not been well-established. The aim of this study is to extend the spectrum of environmental risk factors that may be contributing towards increasing asthma morbidity, especially asthma symptoms severity in rural schoolchildren in Nigeria and to examine possible asthma underdiagnosis among this population.
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Considerable energy has been expended over the last two decades in developing methods for identifying the presence of asthma among participants in population studies. The objective of this endeavour has commonly been to enable epidemiological research on risk factors for asthma, with the ultimate ai...m of preventing the disease. However, there are other reasons for measuring the prevalence of asthma in populations, including the desire to assess the burden of disease attributable to asthma, to track changes over time, and to compare the prevalence among population groups defined by geographical, demographic or social factors. Two major international collaborative studies arising from this work have made major contributions to our knowledge about asthma
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Coronavirus disease 2019 has a mild disease course in children and adolescents. Chronic respiratory conditions, including asthma, have been suggested as risk factors; however, asthma in children is highly variable in both triggers and severity.
During the pandemic, pediatric asthma services limite...d consultations and established virtual clinics. However, respondents perceived their patients’ asthma control to be retained or even improved, while treatment adherence was considered increased. Children with asthma were not disproportionately affected by coronavirus disease 2019.
Trigger avoidance and treatment adherence can rapidly improve asthma control in children, even under lockdown pressure. Children/adolescents with asthma do not appear to need additional prophylactic measures from coronavirus disease 2019 when asthma is well-treated. This article analyses the effect of COVID-19 on Asthma in children, providing information for management guidelines.
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