Evolving SARS-CoV-2 Vaccines: From Current Solutions to Broad-Spectrum Protection

Area of Science:

• Virology
• Immunology
• Vaccinology

Background:

• Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continuously evolves, leading to variants of concern (VOCs).
• Viral mutations enhance infectivity, promote immune evasion, and reduce vaccine effectiveness.
• Other sarbecoviruses, like SARS-CoV-1, pose future pandemic risks.

Purpose of the Study:

• To review current SARS-CoV-2 vaccine strategies and target antigens.
• To summarize approaches for developing vaccines against emerging SARS-CoV-2 variants.
• To explore development of broad-spectrum vaccines effective against multiple sarbecoviruses.

Main Methods:

• Review of current scientific literature on SARS-CoV-2 and sarbecovirus vaccines.
• Analysis of vaccine platforms, including inactivated, viral vector, and nucleic acid vaccines.
• Examination of immune evasion strategies and antigen targets.

Main Results:

• Current vaccines face challenges from emerging SARS-CoV-2 variants.
• Innovative vaccine platforms are being investigated for broad-spectrum neutralizing antibody responses.
• Research is ongoing to develop vaccines targeting infectious sarbecoviruses.

Conclusions:

• Vaccine adaptation and broad-spectrum protection are crucial for pandemic control.
• Developing vaccines effective against SARS-CoV-2 variants and other sarbecoviruses is imperative.
• Further research into novel vaccine platforms is needed to address current and future threats.