TDR (Tropical Disease Research) Annual Report 2018
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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Health care-associated infection (HCAI) places a serious disease burden and has a significant economic impact on patients and health-care systems throughout the world. Yet good hand hygiene, the simple task of cleaning hands at the right times and in the right way, can save lives. World Health O...rganization (WHO) has developed evidence-based WHO Guidelines on Hand Hygiene in Health Care to support health-care facilities to improve hand hygiene and thus reduce HCAI.
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The WHO CIA List should be used as a reference to help formulate and prioritize risk assessment and risk management strategies for containing antimicrobial resistance. The WHO CIA List supports strategies to mitigate the human health risks associated with antimicrobial use in ...food-producing animals and has been used by both public and private sector organizations. The list helps regulators and stakeholders know which types of antimicrobials used in animals present potentially higher risks to human populations and how use of antimicrobials might be managed to minimize antimicrobial resistance of medical importance. The use of the WHO CIA List, in conjunction with the OIE list of antimicrobials of veterinary importance (1) and the WHO Model Lists of Essential Medicines (2) , will allow for prioritization of risk management strategies in the human sector, the food animal sector, inagriculture (crops) and horticulture, through a coordinated multisectoral One Health approach.
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The WHO Living guideline: Drugs to prevent COVID-19 contains the Organization’s most up-to-date recommendations for the use of drugs to prevent COVID-19. The latest version of this living guideline is available in pdf format (via the ‘Download’ button) and via an online platform.
Guidelines ...regarding the use of drugs to treat (rather than prevent) COVID-19 are included in a separate WHO document, Therapeutics and COVID-19: living guideline, that can via an online platform and in pdf format (or click ‘PDF’ in top right corner of online platform). Guidelines regarding the clinical management of COVID-19 patients are included in a further document, COVID-19 Clinical management: Living guideline, that can be accessed via an online platform and in pdf format (or click ‘PDF’ in top right corner of online platform).
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More than 700 000 people lose their life to suicide every year. A core foundation of suicide prevention is the timely registration and regular monitoring of suicide and self-harm. Surveillance data can be used to show important progress towards reaching global targets, such as reducing the suicide r...ate by one third by 2030 as articulated in the UN SDGs and in the WHO Mental Health Action Plan 2013-2030. However, there are considerable discrepancies in the quality of data on suicide and self-harm globally. The aim of this training manual is to equip fieldworkers and supervisors with the skills to collect and manage data on suicide and self-harm in the community via key informants, health-care facilities and police records. In doing so, the value and overall goal is to strengthen the surveillance of suicide and self-harm in communities, particularly in LMICs and hard-to-reach communities where CRVS systems are weak or absent.
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Mothers, newborns, young children and adolescents are losing 20 percent of their health and social services due to the COVID-19 pandemic says a Panel of senior global health experts.
The report brings a new dimension to long-term thinking about the future approach to these diseases. For the fi rst time, it sets out financing needs, options, and targets for meeting WHO Roadmap goals by 2020, but also for reaching universal coverage of all people in need by 2030. Th e report makes... one investment case for cost-eff ectiveness and a second investment case where equity is the focus. It sets targets for ending catastrophic health expenditures and, as part of the drive to strengthen health systems, for getting services closer to where people live.
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The conditionality of this recommendation is largely driven by the current higher unit cost of pyrethroid-PBO ITNs compared
to pyrethroid-only LLINs and therefore the uncertainty of their cost-effectiveness. Furthermore, as PBO is less wash-resistant
than pyrethroids, its bioavailability declines ...faster over the three-year estimated life of an ITN; therefore, the added impact of
pyrethroid-PBO ITNs over that of pyrethroid-only LLINs may decline over time. The evidence comes from two sites in
eastern Africa with pyrethroid resistance and not from other geographies where transmission levels and vector characteristics
may vary. PBO acts by inhibiting certain metabolic enzymes, primarily oxidases, and so are likely to provide greater protection
than pyrethroid-only LLINs where mosquitoes display mono-oxygenase-based insecticide resistance mechanisms.
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The WHO Pharmaceuticals Newsletter provides you with the latest information on the safety of medicinal products and regulatory actions taken by authorities around the world.
In addition, this edition includes summary and recommendations from the virtual meeting of the members of the WHO Programme f...or International Drug Monitoring (PIDM) and other partners, which was held on 20 October 2022.
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Burden of T. solium: Neurocysticercosis is a disease induced by T. solium larvae penetrating human tissues, especially the nervous system. Neurocysticercosis burdens economies, societies and individuals because of the impact of epilepsy on wages, health costs and social stigmatization of sufferers. ...Health systems are also burdened as treatments must be tailored to individual needs.
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Nigeria reported its first case of COVID-19 at the end of February 2020 and subsequently experienced
four waves, with peaks in June 2020 and January, August and December 2021. The COVID-19 pandemic
severely impacted the economy of Nigeria and caused disruption of health services nationwide. During... the crisis, many Nigerians failed to access routine health
services due to decreased income and lockdown
restrictions. The most significant service disruptions
were in maternal and newborn health, vaccination,
sick childcare, family planning and noncommunicable
disease treatment services (1). Pregnant women
were anxious about contracting COVID-19 during
2020, and as a result, many avoided attending health
facilities for antenatal (ANC) and postnatal care (PNC).
Disruptions in the medical supply chain and diversion
of resources to COVID-19 management impacted on
essential health services. Health workers were often
unable to go to work because of transport disruptions
or illness
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The WHO continuously reviews available data on SARS-CoV-2 variants of concern. For this version, the global epidemiological
situation of the COVID-19 pandemic as of 21 January 2022 – at a time when the Omicron VOC had been identified in 171
countries across all six WHO Regions and was rapidly re...placing Delta worldwide – was considered Omicron has a substantial growth advantage, higher secondary attack rates and a higher observed reproduction number than Delta.
There is now significant evidence that immune evasion contributes to the rapid spread of Omicron. Other factors may be a shorter
serial interval (by about 0.8 to 1.2 days compared to Delta) and potential increased intrinsic transmission fitness . There is
growing evidence that with Omicron, there is lower vaccine effectiveness (VE) against infection and symptomatic disease soon after vaccination compared to Delta. There is also evidence of accelerated waning of VE over time of the primary series against infection and symptomatic disease for the studied vaccines. Further studies are required to better understand the drivers of transmission and declining incidence in various settings. These factors include the intrinsic transmission fitness properties of the virus, degree of immune evasion, vaccination coverage and level of vaccine-derived and post-infection immunity, levels of social mixing and degree of application of public health and social measures (PHSM).
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As of 12 December 2022, over 645 million people worldwide have been diagnosed with COVID-19, with over 6.6 million deaths (4).
The Omicron variant, which emerged in late November 2021, and its subvariants, are now the dominant circulating viruses, contributing to the ongoing surge in several countr...ies (4). Vaccination has substantially reduced case numbers and hospitalizations in many countries,but limitations in global access to vaccines mean that many populations, including those in low- and middle-income countries, remain vulnerable. Even in vaccinated individuals, uncertainties remain about duration of protection and efficacy, and the degree of crossprotection with new variants.
There remains a need for more effective treatment and management for those affected by COVID-19. The pandemic – and the
explosion of both research and misinformation – has highlighted the need for trustworthy, accessible and regularly updated living
guidelines to place emerging findings into context and provide clear recommendations for clinical practice
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The aim of this “model contingency plan” is to assist programme managers and planners in devel-oping a national, context-specific, dengue outbreak response plan in order to: (a) detect a dengue outbreak at an early stage through clearly defined and validated alarm signals; (b) precisely define w...hen a dengue outbreak has started; and (c) organize an early response to the alarm signals or an “emergency response” once an outbreak has started.
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In this document, recommendations are provided on designing and implementing
a cross-sectional serosurvey using school-based sampling to estimate age-specific
DENV seroprevalence to inform a country’s national dengue vaccination program.
The document includes recommendations for methods for ...planning and conducting
serosurveys, including survey design, specimen collection, laboratory testing, data
analysis, and the interpretation and reporting of results.
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Sexual exploitation, sexual abuse and sexual harassment (SEAH) violate the rights and wellbeing of the people we serve and the people with whom we serve. Such behaviours are directly in opposition to WHO’s values and our abiding responsibility to do no harm. WHO uses the umbrella term “sexual mi...sconduct” to encompass the full spectrum of prohibited and unwanted behaviour of a sexual nature (including rape and sexual assault) as described in WHO’s 2023 Policy for preventing and addressing sexual misconduct (1). This is because all such acts are prohibited – whether perpetrated by WHO’s own personnel or by implementing partners – and therefore constitute misconduct. The term sexual misconduct is also easier to communicate and translate, as
victims and survivors do not always understand the complicated acronyms and definitions used by the United Nations (UN) and the humanitarian sector. However, we use the terms sexual misconduct and SEAH interchangeably as required when we interact with UN and other stakeholders.
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Les pays progressent vers la réalisation de l’objectif mondial tendant à ce que, d’ici 2025, 95 pour cent des personnes qui vivent avec le VIH connaissent leur statut sérologique. Cependant, en 2020, on estimait encore à 6 millions le nombre de personnes séropositives non diagnostiquées da...ns le monde. Les hommes vivant dans des lieux où la prévalence du VIH est élevée et les hommes appartenant aux populations clés, tous lieux confondus, ont moins de chances de connaître leur séropositivité que les femmes. Ainsi, au niveau mondial, 78 pour cent des hommes de plus de 15 ans connaissent leur statut sérologique, contre 86 pour cent chez les femmes de cette même tranche d’âge.
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Countries are making progress toward the global goal of 95% of people living with HIV knowing their status by 2025. However, considerable gaps remain in achieving these goals globally. Men in high HIV burden settings and men from key populations in all settings are consistently less likely to know t...heir HIV status than women. Globally, 78% of men ages 15 years and older who are living with HIV are aware of their HIV status, compared with 86% of women with HIV of these ages.
Offering HIV testing services, including HIV self-testing, at formal and informal workplaces has emerged as an effective, acceptable and feasible approach for reaching men. A 2018 World Health Organization (WHO) and International Labour Organization (ILO) policy brief provides key guiding principles for HIVST implementation at workplaces. Building on the 2018 policy brief, this brief captures early experience with HIVST implementation at workplaces and discusses emerging approaches of sustainable financing that can be adapted for HIV self-testing at workplaces.
The primary audiences for this policy brief are ministries of health and labour, national HIV programmes, employers’ organizations, workers’ organizations (labour unions), enterprises, implementing partners, including civil society organizations, and health insurance agencies.
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