Uploaded on Dec 24, 2020
PPT on COVID-19 (SARS-CoV-2) new variant VUI-202012
COVID-19 (SARS-CoV-2) new variant VUI-202012
COVID-19 (SARS-COV-2) NEW VARIANT VUI-202012/01 INTRODUCTION • On 14 December 2020, authorities of the United Kingdom of Great Britain and Northern Ireland announced to WHO that a new SARS-CoV-2 variant was detected by viral genomic sequencing. • This version is referred to as SARS-CoV-2 VUI 202012/01 (Variant Under Review, year 2020, month 12, variant 01) (Variant Under Investigation, year 2020, month 12, variant 01). Source: www.who.int NEW VARIANT • Initial research reveals that the variant can spread between people more quickly. Study is under way to determine if this variant is related to any improvements in symptom duration, anti-body reaction or vaccine effectiveness. Source: www.who.int TOTAL CASE • As of 13 December 2020, there were a total of 1108 cases of SARS-CoV-2 VUI 202012/01 infection in the UK. • The version has been taken into account as a part of an epidemiologic and virological study undertaken in Southeast England in earlier December 2020, following an unforeseen surge in COVID 19 cases. Source: www.indianexpress.com INCREASE CASES IN UK • The 14-day notification rate from epidemiological week 41 to week 50 was distinguished by a more than three-fold increase (5 October to 13 December 2020). • About 5% and 10% of all SARS-CoV-2 viruses have been routinely sequenced in the UK and 4% routinely sequenced since the onset of the pandemic in South East England. Source: www.news18.com FIRST REPORTED CASE • More than 50 percent of the isolates found in South-East England as variant strain were identified from 5 October to 13 December. • The first reported variant was retrospective research on 20 September 2020 in Kent, Southeast England, which was followed by a fast development of the same variant later in November. Source: www.reuters.com N501Y • One of the known mutations (N501Y) is the modification of an amino acid in the six main receptor residues (RBD). • According to the Global Initiative for Data Exchange on Avian Influenza (GISAID), in many countries (including South Africa and Australia) this very same domain binding receptor mutation (N501Y) was independently identified. The N501Y Virus mutation identified in the UK and South Africa has been seen separately in a sequence review. Source: www.sciencechronicle.com P681H • Finally, the deletion of the diagnostic PCR tests using the S-gene target at position 69/70 was decided. • The majority of PCR studies worldwide use multiple objectives and thus the diagnostic effect of the version is not supposed to be important. Source: www.who.int PUBLIC HEALTH RESPONSE • The United Kingdom authorities have sent genomic data from this version to GISAID and genomic monitoring continues throughout the world to monitor this situation. • On the 19th of December 2020, officials in the UK announced that Tier 4 limits will extend to the affected regions, including decreases in social events and stricter controls on movement. Source: www.worldeconomicforum.com WHO RISK ASSESSMENT • In order to better understand the effects of particular mutations on viral properties and diagnostics, therapeutics and the efficacy of vaccines, more laboratory studies are needed. • The study is complicated and involves time and coordination between various research groups. Source: www.who.int WHO ADVICE • Avoid direct contact with persons with acute respiratory infections • Frequent washing of hands, particularly after direct interaction with the sick or environment; • Improving levels of infection prevention and checks in hospitals, especially in emergency departments, within healthcare facilities • Wear masks and ensure proper ventilation where possible Source: www.who.int
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