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SARS-CoV-2 variants: A double-edged sword?
Manasi P Jogalekar1, Anurag Veerabathini2, Prakash Gangadaran3,4
1Brigham and Women's Hospital, Boston, MA 02115, USA.
Experimental Biology and Medicine (Maywood, N.J.)
|May 24, 2021
Summary
The emergence of SARS-CoV-2 variants with mutations in the spike protein raises concerns about increased transmissibility and immune escape. This review highlights major variants, their mutations, and their impact on vaccines, stressing the need for broad interventions.
Area of Science:
- Virology
- Immunology
- Epidemiology
Background:
- The COVID-19 pandemic is characterized by the continuous evolution of SARS-CoV-2.
- Emerging variants possess mutations, particularly in the spike protein, raising global health concerns.
- These mutations may influence viral transmissibility, disease severity, and the effectiveness of immune responses.
Purpose of the Study:
- To review major SARS-CoV-2 variants and local strains.
- To analyze specific mutations and their suspected impact on viral characteristics.
- To assess the implications for the ongoing pandemic and vaccine efficacy.
Main Methods:
- Literature review of scientific publications and surveillance data.
- Analysis of reported mutations in key SARS-CoV-2 variants.
- Evaluation of studies on variant characteristics and vaccine effectiveness.
Main Results:
- Several major SARS-CoV-2 variants have been identified with distinct mutation profiles.
- Mutations in the spike protein are frequently associated with altered transmissibility and immune evasion.
- Current vaccines may exhibit reduced efficacy against certain variants.
Conclusions:
- Continuous surveillance and characterization of SARS-CoV-2 variants are crucial.
- The evolution of variants poses a significant challenge to pandemic control.
- Development of broadly protective interventions is essential to combat variant transmission.
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