Share:Before the emergence of more contagious coronavirus variants, estimates placed the threshold for herd immunity at between 60 to 70 percent of the population. "It is not realistic to achieve herd immunity, understood as meaning that we will not see any spread of infection at all", SSI's acting academic director Tyra Grove Krause told the newspaper BT. Earlier, Iceland's chief epidemiologist Thórólfur Gudnason reached the same conclusion that vaccination hasn't led to the herd immunity experts had hoped for. Thórólfur Gudnason mused that there are only two ways to develop herd immunity: the spread of the infection itself and vaccination. "The question is whether we want to test herd immunity by opening and relaxing", he mused in an interview with the newsapaper Visir.

Source: The Nation August 09, 2021 05:03 UTC