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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