More Than Two-Thirds of People Have Covid Antibodies, WHO Says

More than two-thirds of the world’s population probably have significant levels of Covid-19 antibodies, meaning they have either been infected or were vaccinated, the World Health Organization said.

So-called seroprevalence rates surged to 67% in October from 16% in February of 2021, the WHO said, in a summary of studies from around the globe. Given the emergence of the fast-spreading omicron variant, the figure is probably even higher now.

The WHO’s roundup offers a snapshot of how well the world is increasing resistance to the pandemic. While vaccines provide only modest protection against infection from omicron, the WHO still ...