HIV testing programmes need to ensure that all clients who test for HIV are provided with correct diagnoses. The accuracy of HIV testing is critical to prevent misdiagnosis, as the consequences of giving an incorrect test result can be serious for clients, HIV testing services, HIV programmes and pu...blic health.
With the evolution of global HIV epidemiology, HIV testing approaches must also evolve to maintain accuracy and efficiency in population-level diagnosis. Reports suggest that misdiagnosis of HIV status may occur when suboptimal testing algorithms and out-of-date testing strategies are used. As a result of changing epidemiology and declining HIV positivity in testing, WHO recommends all countries use a standard three-test strategy to ensure a PPV of at least 99%, minimizing false-positive misdiagnosis. The WHO-recommended HIV testing strategy, along with quality assurance measures such as retesting to verify a positive diagnosis prior to initiation of HIV treatment, is cost-effective as it prevents misdiagnosis and unnecessary initiation of costly lifelong treatment.
This implementation guide provides practical advice on switching to a three-test strategy and instituting other measures that can help national HIV programmes deliver high-quality, accurate HIV testing services and ensure that misdiagnosis is minimized.
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Snakebite envenoming is a potentially life-threatening disease that typically results from the injection of a mixture of different toxins (“venom”) following the bite of a venomous snake. Envenoming can also be caused by venom being sprayed into a person’s eyes by certain species of snakes tha...t have the ability to spit venom as a defence measure. Not all snakebites result in envenoming: some snakes are non-venomous and venomous snakes do not always inject venom during a bite. About 50–55% of all snakebites result in envenoming. Snake venoms are complex mixtures of protein and peptide toxins, varying from one species to another, and even within species. The toxins in snake venoms are evolutionarily adapted to interact with a large variety of cellular targets in the organisms exposed to them. In humans and animals, snakebite envenoming affects multiple organ systems (depending on the particular species of snake and the classes of toxins present in the venom) and can cause, among other things: haemorrhage and prolonged disruption of haemostasis, neuromuscular paralysis, tissue necrosis, myolysis (muscle degeneration), cardiotoxicity, acute kidney injury, thrombosis and hypovolaemic shock.
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This case study examines the humanitarian response to the conflict-related crisis in the North-East of Nigeria, focusing primarily on the period from 2015 to the end of 2016. The aim is test the central hypotheses of the Emergency Gap project: that the current structure, conceptual underpinning and... prevalent mindset of the international humanitarian system limits its capacity to be effective in response to conflict-related emergencies.
As with many conflict-related crises, the emergency in north-east Nigeria has deep and complex roots in the history of the region. The conflict began in 2009 and quickly developed beyond the control of the authorities. It unfolded in the midst of pre-existing political, social and economic tensions, making an effective humanitarian response exceedingly difficult. Despite this complexity, what is clear is that the crisis has resulted in a sprawling humanitarian disaster that has killed over 25,000 people as a direct result of the violence, and continues to devastate many more lives through hunger, psychological trauma and lack of access to healthcare.
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Stats SA has released an in-depth report on persons with disabilities. The report, written using Census 2011 data, is the first in a series of in-depth analyses of various Census 2011 variables, such as ageing and education.
The report provides statistical evidence relating to the prevalence of dis...ability and characteristics of persons with disabilities at both individual and household levels. Two methods were used to profile disability prevalence and patterns based on the six functional domains, namely seeing, hearing, communication, remembering/concentrating, walking and self-care. These two methods were:
- the level/degree of difficulty in a specific functional domain and;
- the disability index.
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The World Health Organization (WHO) has recommended a universal antiretroviral therapy (ART) for all HIVinfected children before the age of two since 2010, but this implies an early identification of these infants. We described the Prevention of Mother-to-Child HIV Transmission (PMTCT) cascade, the ...staffing and the quality of infrastructures in pediatric HIV care facilities, in Ouagadougou, Burkina Faso.
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Asbestos, the most frequent cause of occupational cancer, continues to be consumed ona massive scale, with millions of people exposed on a daily basis. This review explains why we havefailed in curtailing the silent epidemic of asbestos-related disease and why the numbers of asbestosvictims are like...ly to remain high. Emerging and developed countries have to be reminded that asbestosexposure has yet to become a problem of the past. The worldwide spread of asbestos, followed by thesurge of asbestos-related cancers, resembles the lung cancer epidemic caused by smoking andstimulated by manufacturers.
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These guidelines have been developed specifically to address ethical issues of conducting research in children.
Bulletin of the World Health Organization, 2000, 78 (6)
Situation Overview & Humanitarian Needs | July – September 2017