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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Guidelines for State Health Society and District Health Society
Standard Treatment Guideline
What you need to know about cancer and how to prevent it.
The latest update (28 January 2021) includes the following addition and revision:
biosafety aspects for working with antigen-detecting rapid diagnostic test;
handling new variants of SARS-CoV-2 in the laboratory;
updated assay decontamination before disposal;
personal protectiv...e equipment (PPE) for specimen collection;
addressing chemical hazards and their safe disposal; and
the fourth edition of the WHO Laboratory Biosafety Manual (LBM4) is now available and the terminology in this guidance was aligned with the LBM4.
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4 August 2021. Currently, Pfizer BioNTech COVID-19 Vaccine COMIRNATY® (Tozinameran) is the only COVID-19 vaccine that should be stored and transported at -60ºC to -86ºC ultra-low temperature (ULT) conditions. Prior to use the vaccine can be transferred to -20ºC freezer or +2-8ºC refrigerator at... the lower store levels and immunization service points. However, vaccine shelf life is affected when vaccine is transferred to a different storage temperature. Health workers in charge of managing the storage, transport and administration of the vaccine should be well trained to maintain vaccine quality. Good cold chain planning, strong management of vaccine supply, logistics and distribution, including installation and effective monitoring and evaluation of the performance of the storage equipment and infrastructure, are also necessary.
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Here you can find the latest reports
Guidance for health workers
The Sierra Leone National Infection Prevention and Control Guidelines were jointly developed and updated by the Ministry of Health and Sanitation in collaboration with the World Health Organization ...and the US Centers for Disease Control and Prevention.
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Therapeutics Information and Pharmacovigilance Centre | TIPC
Reading Material for ASHA no.8