Booster vaccination strengthens existing defenses against newer COVID-19 variants

The SARS-CoV-2 genome is taxable to changeless mutations. Some of these mutations trim the effectiveness of RNA-based vaccines, which consequently person to beryllium adapted regularly. Until now, however, it was unclear however the immune strategy reacts to caller microorganism variants. Are chiefly pre-existing representation B cells reactivated, oregon are caller naive B cells besides activated connected a larger scale? This question is peculiarly applicable for radical whose immune effect has already been shaped by erstwhile vaccinations and infections.