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.
Many of the 174 cases had no known connection to the market that was initially considered the source of the outbreak, according to information gathered by WHO investigators during the four-week mission to China to examine the origins of the virus. Chinese authorities declined to give the WHO team raw data on these cases and potential earlier ones, team members said.
Author(s): Betsy McKay in New York, Drew Hinshaw in Warsaw and Jeremy Page in Beijing
Publication Date: 19 February 2021
Publication Site: Wall Street Journal