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Mixing and matching COVID-19 vaccines could provide superior immunity
The approach could prompt a powerful immune response.
4 important question about COVID booster shots, answered
Many newer lineages of SARS-CoV-2 have various mutations affecting the spike-shaped protein on the surface of the virus.
The COVID-19 delta variant is almost as contagious as chickenpox
The delta variant is changing the equation when it comes to transmissibility.