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).
more
GUIDELINES ON LEPROSY CONTROL IN SOUTH AFRICA | 2011
2nd edition. Training module on malaria control
Tobacco control legislation: an introductory guide
The Cholera Outbreak Guidelines: Preparedness, Prevention, and Control provide a practical field guide for responding to cholera outbreaks. Developed by Oxfam GB, the guidelines combine lessons from past cholera interventions and best practices for effective outbreak management. The document outline...s key strategies, including preparedness planning, rapid response to outbreaks, water and sanitation improvements, hygiene education, and coordination among stakeholders. It covers both non-endemic and endemic cholera outbreaks, offering step-by-step guidance on surveillance, intervention, and monitoring. The aim is to ensure community-based, gender-sensitive, and rapid public health responses to control cholera and minimize mortality.
more
Training module on malaria control
This Communication Guide for Malaria Control Interventions is aligned with Tanzania’s Malaria Strategic Plan (2015–2020) and provides comprehensive guidance on the implementation of Social and Behaviour Change Communication (SBCC) for the prevention, diagnosis and treatment of malaria. It is int...ended for all stakeholders and implementing partners, with the aim of ensuring harmonised messaging and coordinated communication efforts. The guide outlines strategies, key messages, communication channels and target audiences, with a focus on sustaining and improving malaria-related behaviours at the individual, family and community levels. It incorporates malaria stratification and supports the development of tailored SBCC interventions in different risk areas. Developed with contributions from the Ministry of Health and Social Welfare, the National Malaria Control Programme and various partner organisations, the guide aims to reduce the malaria burden and promote a malaria-free Tanzania. Supplemented by Standard Operating Procedures (SOPs), the guide serves as a practical tool for consistent and effective malaria communication nationwide.
more
Public health challenges over the past decade have highlighted the importance of approaching health through a holistic lens of human, animal, and environmental sectors, recognizing the need for a collaborative response against shared threats. Zoonotic diseases, transmitted between humans and animals... through their shared environment, are at the forefront of the threats requiring collaborations that span human health, natural ecosystems, and food systems.
more
This guide has been written for managers of national and district trachoma control programmes. It sets out, step-by-step, what is needed to assess the magnitude and extent of the trachoma problem in the area and how to plan, implement, monitor and evaluate a programme to control, and ultimately elim...inate, trachoma.
more
Important Guideline for Ebola prevention and control
It is designed for the following uses:
- for prevention through preparedness--to help African health facilities make advance preparations for responding with appropriate precautions when a VHF (including Ebola) case is suspected.
- for pl...anning and conducting in-service training to strengthen standard precautions and VHF isolation precautions.
- as a rapid reference when a VHF (i.e. Ebola) case appears at a health facility where no previous VHF preparations have been made.
more
Vector control is a vital component of malaria prevention, control and
elimination strategies because it can be highly effective in providing
personal protection and/or reducing disease transmission.
Morbidity and Mortality Weekly Report
Recommendations and Reports: July 7, 2006 / Vol. 55 / No. RR-9