“…The unexpected onset of a pandemic situation had broad and complex repercussions, affecting political, economic, and social patterns, with a high number of deaths, mainly of older adults and people with chronic pathological conditions-who were characterized as risk groups 1,2 . Consequently, the scientific community, in partnership with the States and the private sector, initiated an unprecedented effort to develop vaccines in order to minimize the impacts of the pandemic, considering that they generate immunity against the target microorganism by activating the immune system 2,3 .…”