CHICAGO - The Omicron variant, which is spreading far faster than previous versions of the coronavirus, is not likely to help countries achieve so-called herd immunity against Covid-19, in which enough people become immune to the virus that it can no longer spread, leading disease experts say. From the earliest days of the pandemic, public health officials have expressed hope.
By Julie Steenhuysen CHICAGO (Reuters) - The Omicron variant, which is spreading far faster than previous versions of the coronavirus, is not likely t.
The Omicron variant, which is spreading far faster than previous versions of the coronavirus, is not likely to help countries achieve so-called herd immunity against COVID-19, leading disease experts say.