"The emergence of variants of concern complicated the relatively simple relationship between attaining protection after immunization with vaccines based on the ancestral SARS-CoV-2 strain (5). It is critical to disentangle the issue of waning immunity from immune escape by emerging variants."
#COVID #Covid19 #Vaccines #Immunology #SarsCov2

https://www.science.org/doi/10.1126/science.adh2712