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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Revised and expanded version of the Guidelines
Chapter 8, Prison and Health, published
The Infection Prevention and Control (IPC) Legal Framework comes before the Specialized Technical Committee on Health and Drug Control for adoption and endorsement. The IPC Legal Framework is designed to guide Member States in the review and strengthening of laws and policies that support IPC at bot...h the national level and in healthcare facilities. In developing this IPC Legal Framework, the Africa Centres for Disease Control and Prevention (Africa CDC)
is furthering its mandates to harmonize disease control and prevention policies and promote the prevention and control of diseases by building capacity of public health institutions in Members States.
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No country can claim to be free from health-care associated infections, therefore, improvement of infection prevention and control (IPC) strategies is essential. WHO recommends the use of multimodal improvement strategies to implement IPC interventions. These include each item of standard and transm...ission-based precautions according to national guidelines or standard operating procedures and under the coordination of the national IPC focal point (or team, if existing). This publication consists of three focused improvement tools, called “aide-memoires”, which focus on 1) respiratory and hand hygiene, 2) personal protective equipment, and 3) environmental cleaning, waste and linen management, all elements of standard, droplet/contact and airborne precautions.
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Mpox continues to affect people around the world. A new framework released today by WHO will guide health authorities, communities and other stakeholders in preventing and controlling mpox outbreaks, eliminating human-to-human transmission of the disease, and reducing spillover of the virus from ani...mals to humans.
Mpox is a viral illness caused by the monkeypox virus (MPXV). It can cause a painful rash, enlarged lymph nodes and fever. Most people fully recover, but some get very sick. The virus transmits from person to person through close, including sexual, contact. It also has animal reservoirs in east, central and west Africa, where spillovers from animals to humans can occasionally occur, sparking further outbreaks.
There are two different clades of the virus: clade I and clade II. Clade I outbreaks are deadlier than clade II outbreaks.
A major emergence of mpox linked to clade II began in 2017, and since 2022, has spread to all regions of the world. Between July 2022 and May 2023, the outbreak was declared a Public Health Emergency of International Concern. While that outbreak has largely subsided, cases and deaths continue to be reported today, illustrating that low-level transmission continues around the world.
Currently, there is also a major outbreak of clade I virus in the Democratic Republic of the Congo (DRC), where cases have been on the rise for decades. Since the beginning of the year, over 6500 cases and 345 deaths have been reported in the DRC. Almost half of these are among children under the age of 15 years.
The Strategic framework for enhancing prevention and control of mpox (2024–2027) provides a roadmap for health authorities, communities, and stakeholders worldwide to control mpox outbreaks in every context, advance mpox research and access to countermeasures, and to minimize zoonotic transmission.
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2nd edition. Training module on malaria control
The development of this draft Proposed programme budget 2022–2023 comes at a unique moment for WHO. The world is in the grip of the coronavirus disease (COVID-19) pandemic and faces health, social and economic consequences on an unprecedented scale. Although it is not known when the COVID-19 pande...mic will end, recent encouraging vaccine results, in addition to the examples of countries that have achieved good results through public health measures, hold out the prospect of better days ahead. The full impact of the pandemic cannot yet be determined. But whatever its implications, the Secretariat will rise to the challenge and is ready to adapt so that it is fully equipped to support Member States for any eventuality in the future – to make sure that the world will never again have to face this kind of crisis.
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2nd edition. The interagency field handbook on malaria control was developed to set out effective malaria control responses in humanitarian emergencies, particularly during the acute phase when reliance on international humanitarian assistance is greatest. This second edition represents a thorough u...pdating and revision of the first edition. The structure remains similar, but includes an additional chapter on humanitarian coordination. All chapters have been revised to reflect changes in best practices, improvements in technologies, availability of new tools, and changes in WHO recommendations.
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Training module on malaria control