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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Policy Brief
HIV testing services
December 2016
WHO/HIV/2016.21
The Regional strategy for measles control recommends that a second opportunity for measles immunization be provided to all children irrespective of their vaccination status or history of clinical measles. The preferred method of provision of a second opportunity is through Supplemental Immunization ...Activities (SIAs) targeting children 9 months to 14 years in catch-up campaigns and 9 months to 4 or 5 years during periodic follow-up campaigns
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Available in Chinese, English, French, Russian and Spanish; WHO and UNICEF policy brief, 19 April 2021
Persons with disabilities are disproportionately impacted by COVID-19, both directly because of infection, and indirectly because of restrictions to reduce the spread of the virus. Persons with di...sabilities are a diverse group, and the risks, barriers and impacts faced by them will vary in different contexts according to, among other factors, their age, gender identity, type of disability, ethnicity, sexual orientation, and migration status.
This document presents considerations and actions for the following stakeholders to ensure equity in access to vaccination against COVID‑19 for persons with disabilities
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Q13: Are strategies aimed at improving community attitudes towards mental, neurological and substance use conditions (e.g. anti-stigma campaigns) feasible and effective?
Revised National Tuberculosis Control Programme
Trainers guide; Directors guide; Training file; Clinical practice; Classroom pratice; Participants workbook
The document contains preliminary report on all aspects of WHO’s response in the Ebola outbreak. WHO Member States will discuss the report at the sixty-eighth World Health Assembly.
The purpose of this document is to provide interim recommendations to guide breastfeeding practices in the context of Zika virus. A systematic review of evidence will be conducted in March 2016 to revise and update these recommendations. Also available in arabic and chinese. Please download directly... from the website.
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Updated 6 September 2016. This guidance has been developed to provide advice on the prevention of potential sexual transmission of Zika virus. The primary transmission route of Zika virus is via the Aedes mosquito. However, sexual transmission of Zika virus may also be possible, with limited evidenc...e recorded in a few cases. This is of concern due to an association between Zika virus infection and potential complications, including microcephaly and Guillain-Barré syndrome.
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Bonchial asthma is the most common chronic respiratory disease in the world. In Kenya, it has been estimated that about 7.5% of the Kenyan population, nearly 4 million people, are currently living with asthma. Many cases tend to be underdiagnosed and undertreated which leads to high levels of morbid...ity and avoidable deaths. The consequences of poorly controlled asthma, including physical, mental, social, and economic impacts, are magnified in the poor on account of poor access to asthma services and sub-optimal quality of those services. With these guidelines, Kenya's Ministry of Health aims to work towards embedding asthma care in Universal Health Care (UHC) to ensure that quality asthma services are available in primary care settings with
referral networks strengthened for those who may require secondary and tertiary care. These national asthma guidelines will also ensure that treatment for asthma is standardized in both the public and the non-state health care sector.
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Kyiv, Ukraine 22-24 November 2010
Meeting Report
This leaflet is intended to inform physicians — mainly GPs — and medical students on how to recognize a possible radiation injury. It is important to note that radiation injury has no special signs and symptoms. However, the combination of some of them may be typical of radiation injury.
Arabic... version available: http://www.who.int/ionizing_radiation/pub_meet/en/Arabicleaflet.pdf?ua=1
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Information for families affected