Related Experiment Video

Updated: Oct 9, 2025

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2
08:41

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2

Published on: November 5, 2021

3.0K

OMICRON (B.1.1.529): A new SARS-CoV-2 variant of concern mounting worldwide fear

Vikram Thakur1,2, Radha Kanta Ratho2

  • 1Viral Research Diagnostic Laboratory (VRDL), Government Medical College, Patiala, India.

Journal of Medical Virology
|December 22, 2021
PubMed

Insights

The Omicron variant of SARS-CoV-2 is spreading globally, raising concerns about its infectivity and ability to evade vaccine immunity due to mutations in the Spike protein. Further analysis is needed on its transmission, severity, and impact on COVID-19 vaccines.

Area of Science:

  • Virology
  • Epidemiology
  • Immunology

Background:

  • The emergence of the SARS-CoV-2 Omicron variant presents a significant global health concern.
  • Omicron has rapidly spread across numerous countries, prompting extensive research and public health responses.

Purpose of the Study:

  • To highlight the identification and global dissemination of the SARS-CoV-2 Omicron variant.
  • To discuss hypotheses regarding Omicron's origin and infectivity.
  • To analyze the implications of Omicron's mutations on vaccine efficacy and disease characteristics.

Main Methods:

  • Review of emerging scientific literature and epidemiological data.
  • Analysis of genetic mutations within the SARS-CoV-2 Spike protein, particularly in the RBD region.
  • Synthesis of current understanding regarding transmission, infectivity, and morbidity.

Main Results:

  • Omicron variant identified and has spread to over 77 nations.
  • Mutations in the RBD of the Spike protein are a key concern, potentially impacting vaccine-induced immunity.
  • Ongoing research is exploring Omicron's transmission potential, infectivity, and disease severity.

Conclusions:

  • The rapid global spread and mutational profile of Omicron necessitate urgent scientific attention.
  • Understanding Omicron's characteristics is crucial for adapting public health strategies and vaccine approaches.
  • Further research is essential to fully assess the impact of Omicron on the COVID-19 pandemic.
Keywords:
OMICRONre-infectionspike proteintransmissiontravel restrictionsvaccines

More Related Videos

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses03:53

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses

Published on: November 10, 2023

1.4K
Author Spotlight: A Pseudotype Virus System for Assessing Omicron Subvariants and Neutralizing Antibodies in SARS-CoV-2 Research06:08

Author Spotlight: A Pseudotype Virus System for Assessing Omicron Subvariants and Neutralizing Antibodies in SARS-CoV-2 Research

Published on: September 8, 2023

1.4K

Related Concept Videos

Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
16.7K
Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
327
Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
23.9K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
5.5K
Global Regulatory Systems01:28

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
118
Global Climate Change01:50

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.9K