The Lancet
Nov 28, 2015 Volume 386 Number 10009 p2117-2226 e45
http://www.thelancet.com/journals/lancet/issue/current
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Editorial
The Global Burden of Diseases: living with disability
The Lancet
DOI: http://dx.doi.org/10.1016/S0140-6736(15)01096-X
Summary
The UN observes the International Day of Persons with Disabilities on Dec 3, 2015. This year, three themes are highlighted in the agenda: making cities inclusive for all, improving disability data and statistics, and including those with invisible disabilities in society and development. These themes echo the specific mention of persons with disabilities in five of the Sustainable Development Goals (SDGs): education; economic growth and employment; creation of inclusive, safe, resilient, and sustainable cities; reduction of inequalities; and data collection related to monitoring the SDGs.
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Editorial
Ebola: lessons for future pandemics
The Lancet
DOI: http://dx.doi.org/10.1016/S0140-6736(15)01097-1
Summary
At the time of writing, hopes that the devastating west African Ebola outbreak was finally coming to its end were diminished by the recent confirmation of three new cases of the disease in Liberia. The country had previously been declared Ebola free on Sept 3—followed by Sierra Leone on Nov 7 and Guinea on Nov 19. The outbreak, which killed more than 11 000 people and infected at least 28 000, is the largest of its kind and a stark reminder of the fragility of health security in an interdependent world.
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Global, regional, and national disability-adjusted life years (DALYs) for 306 diseases and injuries and healthy life expectancy (HALE) for 188 countries, 1990–2013: quantifying the epidemiological transition
GBD 2013 DALYs and HALE Collaborators Christopher J L Murray et al
Summary
Background
The Global Burden of Disease Study 2013 (GBD 2013) aims to bring together all available epidemiological data using a coherent measurement framework, standardised estimation methods, and transparent data sources to enable comparisons of health loss over time and across causes, age–sex groups, and countries. The GBD can be used to generate summary measures such as disability-adjusted life-years (DALYs) and healthy life expectancy (HALE) that make possible comparative assessments of broad epidemiological patterns across countries and time. These summary measures can also be used to quantify the component of variation in epidemiology that is related to sociodemographic development.
Methods
We used the published GBD 2013 data for age-specific mortality, years of life lost due to premature mortality (YLLs), and years lived with disability (YLDs) to calculate DALYs and HALE for 1990, 1995, 2000, 2005, 2010, and 2013 for 188 countries. We calculated HALE using the Sullivan method; 95% uncertainty intervals (UIs) represent uncertainty in age-specific death rates and YLDs per person for each country, age, sex, and year. We estimated DALYs for 306 causes for each country as the sum of YLLs and YLDs; 95% UIs represent uncertainty in YLL and YLD rates. We quantified patterns of the epidemiological transition with a composite indicator of sociodemographic status, which we constructed from income per person, average years of schooling after age 15 years, and the total fertility rate and mean age of the population. We applied hierarchical regression to DALY rates by cause across countries to decompose variance related to the sociodemographic status variable, country, and time.
Findings
Worldwide, from 1990 to 2013, life expectancy at birth rose by 6·2 years (95% UI 5·6–6·6), from 65·3 years (65·0–65·6) in 1990 to 71·5 years (71·0–71·9) in 2013, HALE at birth rose by 5·4 years (4·9–5·8), from 56·9 years (54·5–59·1) to 62·3 years (59·7–64·8), total DALYs fell by 3·6% (0·3–7·4), and age-standardised DALY rates per 100 000 people fell by 26·7% (24·6–29·1). For communicable, maternal, neonatal, and nutritional disorders, global DALY numbers, crude rates, and age-standardised rates have all declined between 1990 and 2013, whereas for non–communicable diseases, global DALYs have been increasing, DALY rates have remained nearly constant, and age-standardised DALY rates declined during the same period. From 2005 to 2013, the number of DALYs increased for most specific non-communicable diseases, including cardiovascular diseases and neoplasms, in addition to dengue, food-borne trematodes, and leishmaniasis; DALYs decreased for nearly all other causes. By 2013, the five leading causes of DALYs were ischaemic heart disease, lower respiratory infections, cerebrovascular disease, low back and neck pain, and road injuries. Sociodemographic status explained more than 50% of the variance between countries and over time for diarrhoea, lower respiratory infections, and other common infectious diseases; maternal disorders; neonatal disorders; nutritional deficiencies; other communicable, maternal, neonatal, and nutritional diseases; musculoskeletal disorders; and other non-communicable diseases. However, sociodemographic status explained less than 10% of the variance in DALY rates for cardiovascular diseases; chronic respiratory diseases; cirrhosis; diabetes, urogenital, blood, and endocrine diseases; unintentional injuries; and self-harm and interpersonal violence. Predictably, increased sociodemographic status was associated with a shift in burden from YLLs to YLDs, driven by declines in YLLs and increases in YLDs from musculoskeletal disorders, neurological disorders, and mental and substance use disorders. In most country-specific estimates, the increase in life expectancy was greater than that in HALE. Leading causes of DALYs are highly variable across countries.
Interpretation
Global health is improving. Population growth and ageing have driven up numbers of DALYs, but crude rates have remained relatively constant, showing that progress in health does not mean fewer demands on health systems. The notion of an epidemiological transition—in which increasing sociodemographic status brings structured change in disease burden—is useful, but there is tremendous variation in burden of disease that is not associated with sociodemographic status. This further underscores the need for country-specific assessments of DALYs and HALE to appropriately inform health policy decisions and attendant actions.
Funding
Bill & Melinda Gates Foundation.
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Health Policy
Will Ebola change the game? Ten essential reforms before the next pandemic. The report of the Harvard-LSHTM Independent Panel on the Global Response to Ebola
Suerie Moon, Devi Sridhar, Muhammad A Pate, Ashish K Jha, Chelsea Clinton, Sophie Delaunay, Valnora Edwin, Mosoka Fallah, David P Fidler, Laurie Garrett, Eric Goosby, Lawrence O Gostin, David L Heymann, Kelley Lee, Gabriel M Leung, J Stephen Morrison, Jorge Saavedra, Marcel Tanner, Jennifer A Leigh, Benjamin Hawkins, Liana R Woskie, Peter Piot
Summary
The west African Ebola epidemic that began in 2013 exposed deep inadequacies in the national and international institutions responsible for protecting the public from the far-reaching human, social, economic, and political consequences of infectious disease outbreaks. The Ebola epidemic raised a crucial question: what reforms are needed to mend the fragile global system for outbreak prevention and response, rebuild confidence, and prevent future disasters? To address this question, the Harvard Global Health Institute and the London School of Hygiene & Tropical Medicine jointly launched the Independent Panel on the Global Response to Ebola.
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Viewpoint
The International Health Regulations 10 years on: the governing framework for global health security
Prof Lawrence O Gostin, JD, Mary C DeBartolo, JD, Eric A Friedman, JD
Published Online: 22 November 2015
Summary
Fundamental revisions to the International Health Regulations in 2005 were meant to herald a new era of global health security and cooperation. Yet, 10 years later, the International Health Regulations face criticism, particularly after the west African Ebola epidemic. Several high-level panels1 are reviewing the International Health Regulations’ functions and urging reforms.2 The Global Health Security Agenda, a multilateral partnership focused on preventing, detecting, and responding to natural, accidental, or intentional disease outbreaks, has similar capacity building aims, but operates largely outside the International Health Regulations.