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 Infection prevention and control in the context of coronavirus disease 2019 (COVID-19): a living guideline consolidates technical guidance developed and published during the COVID-19 pandemic into evidence-informed recommendations for infection prevention and control (IPC). This living guideline... is available both online and PDF.
**This version of the living guideline (version 5.0) **includes the following seven revised statements for the prevention, identification and management of SARS-CoV-2 infections among health and care workers:
a good practice statement on national and subnational testing strategies;
a good practice statement on passive syndromic surveillance of health and care workers;
a good practice statement on prioritizing health and care workers for SARS-CoV-2 testing;
a good practice statement on protocols for reporting and managing health and care worker exposures;
a good practice statement to limit in-person work of health and care workers with active SARS-CoV-2 infections;
a statement on high-risk exposures and quarantine; and,
a conditional recommendation on the duration of isolation for health and care workers.
Understanding the updated section
Prevention of infections in the health care setting includes a multi-pronged and multi-factorial approach that includes IPC and occupational health and safety measures and adherence to Public Health and Social Measures in the community by the health workforce. The underlying infection prevention and control strategy of this section is the notion that early identification of symptomatic cases, testing and quarantining/isolating health and care workers decreases the risk of nosocomial infection to patients and to other health and care workers.
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Chagas disease (CD) is endemic in the Americas, being present in 21 countries, where it affects about 6 million
people.(1) With such relevant numbers of people affected and disability adjusted life years lost, CD is a poverty-related
and poverty-promoting disease.
Although data describe a relevan...t ongoing public health problem for the American continent, significant results
in the interruption of transmission has been achieved by coordinated multi-country programs. In particular, the
Southern Cone Initiative (SCI), officially formalised in November 1991 by the Ministers of Health of Argentina, Brazil, Bolivia, Chile, Paraguay and Uruguay, has shown how a well-designed control program can significantly reduce
CD transmission.(2) Before this initiative, in these countries, there were 11 million infected persons and 50 million at
risk, 62% of the infected individuals of the whole continent.
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A Manual for Medical Officer
Developed under the Government of India – WHO Collaborative Programme 2008-2009
Accessed: 11.03.2019
Morbidity and Mortality Weekly Report (MMWR) October 4, 2019 / 68(39);851–854
BMJ Glob Health 2017;2:e000345. doi:10.1136/bmjgh-2017-000345. WHO's 2020 milestones for Chagas disease include having all endemic Latin American countries certified with no intradomiciliary Trypanosoma cruzi transmission, and infected patients under care. Evaluating the variation in historical expo...sure to infection is crucial for assessing progress and for understanding the priorities to achieve these milestones.
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This short brief describes the main findings and the key lessons learned from the research project "Evaluation of the impact of alcohol control policies on morbidity and mortality in Lithuania and other Baltic states", funded by the United States National Institute on Alcohol Abuse and Alcoholism fo...r the period 2000–2025. The WHO-backed project aims to assess the effects of alcohol control policies implemented in Estonia, Latvia and Lithuania and to investigate the impact they have had on both people's health and the countries' economies, based on concrete actions taken. The key findings of the project demonstrate that alcohol control policies such as taxation and availability measures decrease all-cause mortality and reduce inequalities, and that dismantling alcohol control policies has the opposite effect on population health. They also highlight that consumption of unrecorded alcohol will not necessarily go up if taxation is increased and that specific countermeasures can be taken to prevent an increase in unrecorded consumption.
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Due to the particular Amazonian situation of vectorial transmission based mostly on the wild cycle of Trypanosoma cruzi with diversity of triatomine vectors involved in effective transmission, and the variety of eco-epidemiological situations that facilitate such transmission, the countries of the A...mazon agreed that the development and strengthening of preventive actions based on comprehensive surveillance and detection of effective vectorial transmission, based on mandatory notification of acute or chronic cases, was required. In addition, it was recommended that surveillance and prevention and/or vector control actioDue to the particular Amazonian situation of vectorial transmission based mostly on the wild cycle of Trypanosoma cruzi with diversity of triatomine vectors involved in effective transmission, and the variety of eco-epidemiological situations that facilitate such transmission, the countries of the Amazon agreed that the development and strengthening of preventive actions based on comprehensive surveillance and detection of effective vectorial transmission, based on mandatory notification of acute or chronic cases, was required.
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Emerg Infect Dis. April 2015
Read online at: http://wwwnc.cdc.gov/eid/article/21/4/14-1940_article
Over the span of a few weeks during July and August 2014, events in West Africa changed perceptions of Ebola virus disease (EVD) from an exotic tropical disease to a priority for global health securi...ty. We describe observations during that time of a field team from the Centers for Disease Control and Prevention and personnel of the Liberian Ministry of Health and Social Welfare. The authors outline the early epidemiology of EVD within Liberia, including the practical limitations on surveillance and the effect on the country’s health care system, such as infections among health care workers
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Introduction of different Non Communicable Disease Control Programmes
The goal of this addendum is to help management and staff
minimize the risk of TB transmission at facilities in resource limited settings in which a.) HIV-infected persons receive diagnosis, care, treatment,
and/or support, and b.) there is a high prevalence of HIV infection, both known
and... undiagnosed, in settings such as prisons, jails, other
detention centers, and drug rehabilitation centers.
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Keep Safe – Keep Serving; Liberia: Updated Sept 25 2014.
This document is intended to inform infection prevention and control practices and supply needs in healthcare facilities. As the Ebola outbreak evolves, the document will need to be adapted accordingly.
The guidance provides considerations... for establishing Ebola Care Centres. Because needs and resources may vary in different settings, these recommendations should be adapted to the situation in each county
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This technical report presents the epidemiology of human and animal leishmaniases in the EU and its neighbouring countries and concludes that the disease remains widespread and underreported in many countries of southern Europe, northern Africa, and the Middle East and that there is a need to improv...e leishmaniasis prevention and control based on robust surveillance in humans, animals, and vectors, and to increase public awareness following a one health approach.
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Morbidity and Mortality Weekly Report
Recommendations and Reports: July 7, 2006 / Vol. 55 / No. RR-9