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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The new treatment recommendations that extend the 2018 treat all recommendation for adults with chronic HCV infection to include adolescents and children down to 3 years, and to align the existing recommended pangenotypic direct-acting antiviral (DAA) regimens (SOF/DCV, SOF/VEL and G/P) for adults, ...to those for adolescents and children. This alignment is expected to simplify procurement, promote access to treatment among children in low- and middle-income countries and contribute to global efforts to eliminate the disease
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Results of rapid assessment
The COVID-19 pandemic has disrupted or halted critical mental health services in 93% of countries worldwide while the demand for mental health is increasing, according to a new WHO survey. The survey of 130 countries provides the first global data showing the devastating... impact of COVID-19 on access to mental health services and underscores the urgent need for increased funding.
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Training in monitoring and epidemiological assessment of mass drug administration for eliminating lymphatic filariasis: learners’ guide. World Health Organization.
Meeting report, 25-26 September 2017 Copenhagen, Denmark
When situations occur in which unwanted events are rightly or wrongly connected with vaccination, they may erode confidence in vaccines and the authorities delivering them. This document presents the scientific evidence behind WHO’s recommendations on building and restoring confidence in vaccines ...and vaccination, both in ongoing work and during crises. The evidence draws on a vast reserve of laboratory research and fieldwork within psychology and communication. It examines how people make decisions about vaccination; why some people are hesitant about vaccination; and the factors that drive a crisis, covering how building trust, listening to and understanding people, building relations, communicating risk and shaping messages to the audiences may mitigate crises. This document provides a knowledge base for stakeholders who develop communication strategies or facilitate workshops on communication and trust-building activities in relation to vaccines and immunization, such as immunization programme units, ministries of health, public relations and health promotion units, vaccine safety communication trainers and immunization advisory bodies.
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The purpose of this document is to provide guidance on the cleaning and disinfection of environmental surfaces in the context of COVID-19. This guidance is intended for health care professionals, public health professionals and health authorities that are developing and implementing policies and sta...ndard operating procedures (SOP) on the cleaning and disinfection of environmental surfaces in the context of COVID-19.
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Cervical intraepithelial neoplasia (CIN) is a premalignant lesion that may exist at any one of three stages: CIN1, CIN2, or CIN3. If left untreated, CIN2 or CIN3 (collectively referred to as CIN2+) can progress to cervical cancer. Instead of screening and diagnosis by the standard sequence of cytolo...gy, colposcopy, biopsy, and histological confirmation of CIN, an alternative method is to use a ‘screen-and-treat’ approach in which the treatment decision is based on a screening test and treatment is provided soon or, ideally, immediately after a positive screening test. This guideline provides recommendations for strategies for a screen-and-treat programme
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Community-based strategies play a significant role in many health systems in low- and middle-income countries, especially in light of critical shortages in the health workforce. The term community health worker has been used to refer to volunteers and salaried, professional or lay health workers wit...h a wide range of training, experience, scope of practice and integration in health systems. In the context of this study, we use the term community-based practitioner (CBPs) to reflect the diverse nature of these cadres of health workers.
CBPs provide preventive, promotive, curative and palliative services across a range of areas, including reproductive, maternal, newborn and child health, HIV, tuberculosis, malaria, control of other endemic diseases, and noncommunicable diseases. Significant evidence has emerged over the past two decades on their effectiveness, which has triggered interest in the potential to use their services to expand access to care, in particular in rural and underserved areas where deployment and retention of more qualified health workers is problematic. Calls have been made to integrate CBP programmes in human resources and health strategies, and to scale up rapidly the extent and coverage of CBP initiatives.
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The "Questions and Answers on Prevention and control of Alcohol related harm" has been developed by WHO country office in Viet Nam with technical contribution from national and international experts in the field. This publication provides scientific evidences on harms of alcohol use to the health of... users as well as to others and society at large. It provides WHO recommendations for the most effective prevention measures in Viet Nam and will also help answer questions that policy makers may have on how to develop effective policies for prevention and control of alcohol related harms.
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This document provides up-to-date guidance on laboratory studies as well as smallscale (semi-field) and large-scale field trials to assess the efficacy and determine field application rates of new molluscicide products for control of schistosomiasis.
Second Edition
AIDS Medicines and diagnostics services
July 2015
Masangane Case Study
The Vesper Society commissioned ARHAP to do research on the integrated Masangane HIV/AIDS programme affiliated with the Moravian Church in Eastern Cape, South Africa. Completed in 2006, this study aimed to understand the role of the religious health assets of the Masangane ART ...programme for public health, as a model for a replicable response to HIV/AIDS. A crucial aspect of this research involved teasing out what value is added to this programme by its faith-based nature. Field work for this case study consisted of more than 20 key informant interviews of various stakeholders: Masangane staff and management; church leaders; health seekers; donors and health providers. Health seekers also answered 77 questionnaires and were involved in two focus groups.
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The recommendations in these guidelines promote the use of simple, non-invasive diagnostic tests to assess the stage of liver disease and eligibility for treatment; prioritize treatment for those with most advanced liver disease and at greatest risk of mortality; and recommend the preferred use of n...ucleos(t)ide analogues with a high barrier to drug resistance (tenofovir and entecavir, and entecavir in children aged 2–11 years) for first- and second-line treatment. Recommendations for the treatment of HBV/HIV-coinfected persons are based on the WHO 2013 Consolidated guidelines on the use of antiretroviral drugs for treating and preventing HIV infection, which will be updated in 2015.
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DEMOGRAPHIC RESEARCH, VOLUME 36, ARTICLE 37, PAGES 1081-1108; PUBLISHED 5 APRIL 2017; http://www.demographic-research.org/Volumes/Vol36/37/; DOI: 10.4054/DemRes.2017.36.37
The WHO Toolkit for the care and support of people affected by complications associated with Zika virus has been developed to serve as a model guide, with the goal of enhancing country preparedness for Zika virus outbreaks. The toolkit is intended to provide a systems approach involving public heal...th planners and managers so that the necessary infrastructure and resources can be identified and incorporated as needed, as well as technical and practical guidance for health care professionals and community workers.
The toolkit includes three manuals to provide countries with tools to effectively recognize people affected by Zika virus and deliver comprehensive care and support:
Manual for public health planners and managers
Manual for health care professionals
Manual for community workers
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The Guidelines for the Diagnosis, Treatment and Prevention of Leprosy provide state-of-the-art knowledge and evidence on leprosy diagnosis, treatment and prevention based on a public health approach in endemic countries. The target audience of this document includes policy-makers in leprosy or infec...tious diseases in the ministries of health (especially but not limited to endemic countries), nongovernmental organizations, clinicians, pharmaceutical companies, donors and affected persons
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This report is part of the gender and noncommunicable diseases (NCDs) initiative launched by the WHO Regional Office for Europe, which aims to strengthen the response to NCDs through a gender approach. It is part of a series of country profiles and a synthesis report. The country profile of Ukraine ...presents a gender analysis of the WHO STEPwise survey (STEPS) data to support international commitments to reducing the burden of NCDs with evidence and knowledge exchange. A gender analysis of STEPS NCD risk-factor survey data describes how risk factors for chronic diseases differ between and among men and women by exploring and tracking the direction and magnitude of trends in risk factors and accessing services by sociodemographic variables. Important differences hide even in sex-disaggregated data that need to be unpacked through sociodemographic characteristics, because men and women are not homogenous groups. The report also recognizes gaps in evidence and calls for further analysis of the impact of gender-based inequalities.
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