Response to Dominant SARS-CoV-2 Variants: COVID Antigen Variants

SRAS-CoV-2 variants BA.2.86

The ever-evolving landscape of the COVID-19 pandemic has introduced us to various SARS-CoV-2 variants, each with its unique genetic makeup and potential implications. In this article, we will delve into two prominent variants, BA.2.86 and EG.5, which have garnered significant attention from the global health community. We will also explore the efforts of Taj Pharmaceuticals in developing crucial resources to combat these variants effectively.

SARS-CoV-2 Variant: BA.2.86

The World Health Organization (WHO) recently designated a new variant as a ‘variant of interest’—BA.2.86. Although the number of confirmed cases worldwide is relatively low, with only two dozen reported cases, this variant is causing quite a stir due to its genetic complexity. BA.2.86 boasts more than 30 gene mutations, a stark contrast to the original Wuhan-Hu-1 strain, which had only a handful. This new variant has accumulated a staggering 58 mutations. As of the latest data released by the WHO, only four known sequences of BA.2.86 have been identified, and there is no known epidemiological link connecting them.

SARS-CoV-2 Variant: EG.5

In contrast to BA.2.86’s limited prevalence, EG.5 has become one of the most widely distributed variants globally. It has been reported in over 53 countries and is responsible for approximately 23.8% of all COVID-19 cases. EG.5 originated in Indonesia and has been elevated to the status of a ‘circulating variant of interest’ by the WHO.

To combat the spread of these and other SARS-CoV-2 variants, it is crucial to monitor their impact on transmissibility, disease severity, and vaccine and therapeutic effectiveness. The WHO has categorized various variants based on these parameters, with some showing increased transmissibility or immune evasiveness, potentially affecting the efficacy of vaccines and treatments.

Let’s take a closer look at some of the key variants that have dominated the global landscape:

WHO LabelPango LineageEarliest documented samplesTransmissibilityImmune EvasivenessVaccine Effectiveness
AlphaB.1.1.7United Kingdom+ + +— —
BetaB.1.351South Africa++ + + +
GammaP.1Brazil+ ++ +
DeltaB.1.617.2India+ + + ++ +
LambdaC.37Peru+ + + ++ +
OmicronEG.5Indonesia+ + + + (?)+ + + + (?)?

Taj Pharmaceuticals has been at the forefront of tracking the genomic data of the virus and is actively engaged in developing products related to SARS-CoV-2 variants. They offer a comprehensive solution to support research and development efforts related to these variants, including recombinant antigens, antibodies, Test kits, and magnetic beads.

Recombinant Antigens

Taj Pharmaceuticals provides recombinant antigens of Variants of Concern (VOCs) with critical mutations, covering key locations on the spike protein and nucleocapsid protein. These antigens are available with multiple tags for easy identification and are known for their high purity, bioactivity, and stability. Featured products include super stable spike trimer mutants, specifically designed to address mutations found in Alpha, Beta, Delta, Gamma, Lambda, and Omicron variants.


Their broad-spectrum neutralizing antibody can effectively neutralize all VOCs in pseudovirus neutralization assays. Additionally, they offer an anti-nucleocapsid antibody pair capable of recognizing nucleocapsid protein variants. These antibodies are characterized by their high specificity and binding activity, making them invaluable for research and diagnostic purposes.

Taj Pharmaceuticals is committed to addressing the challenges posed by SARS-CoV-2 variants and offers a range of products and services to support healthcare professionals and researchers worldwide.

Taj Pharmaceuticals Limited is a leading global player in the pharmaceutical industry, with a strong presence in India. Their focus on therapeutic areas such as cancer, virology, and transplantation underscores their commitment to improving healthcare outcomes. With a rich history spanning over a century, Taj Pharmaceuticals continues to innovate and provide targeted medicines and diagnostic tools to enhance the quality of healthcare worldwide.

In conclusion, the response to dominant SARS-CoV-2 variants, including BA.2.86 and EG.5, requires a multifaceted approach that combines scientific research, vaccine development, and diagnostic tools. Taj Pharmaceuticals’ dedication to this cause is evident in their comprehensive offerings aimed at addressing the challenges posed by these variants. As the world continues to battle the ever-evolving COVID-19 pandemic, collaborations and innovations from organizations like Taj Pharmaceuticals play a crucial role in safeguarding global health.


  1. What makes BA.2.86 a variant of interest?
    BA.2.86 is considered a variant of interest due to its high number of gene mutations, raising concerns about its potential impact on transmissibility and vaccine effectiveness.
  2. Where did the EG.5 variant originate?
    EG.5 originated in Indonesia and has since spread to numerous countries, becoming a widely distributed variant.
  3. How can Taj Pharmaceuticals’ products help combat SARS-CoV-2 variants?
    Taj Pharmaceuticals offers recombinant antigens and antibodies designed to support research and development efforts related to SARS-CoV-2 variants, aiding in the development of vaccines and diagnostic tools.
  4. What is the significance of monitoring SARS-CoV-2 variants’ transmissibility and immune evasiveness?
    Monitoring these factors is crucial to understand how variants may affect the spread of the virus and the efficacy of vaccines and treatments.
  5. Where is Taj Pharmaceuticals headquartered?
    Taj Pharmaceuticals is headquartered in Mumbai, India, and is a global leader in the pharmaceutical industry.