Covid-19 Was Spreading in China Before First Confirmed Cases, Fresh Evidence Suggests

Covid-19 Was Spreading in China Before First Confirmed Cases, Fresh Evidence Suggests

The number, and genetic sequencing, of the first cases identified by China suggest coronavirus was spreading before early December 2019

New evidence from China is affirming what epidemiologists have long suspected: The coronavirus likely began spreading unnoticed around the Wuhan area in November 2019, before it exploded in multiple different locations throughout the city in December.

Chinese authorities have identified 174 confirmed Covid-19 cases around the city from December 2019, said World Health Organization researchers, enough to suggest there were many more mild, asymptomatic or otherwise undetected cases than previously thought.