Chinese researchers may have begun developing two Covid vaccines in November 2019, before the official start of the outbreak

"It even appears that China had begun making vaccines before it had admitted to the world there was a dangerous virus running rampant through the country.

But it has taken a long time to reach this point.

When Covid-19 first emerged in Wuhan in December 2019, many pointed out that the outbreak was close to the Wuhan Institute of Virology (WIV)."
https://www.yahoo.com/news/no-one-believed-covid-wuhan-204950096.html

"Chinese researchers may have begun developing two Covid vaccines in November 2019, before the official start of the outbreak, a US senate report has claimed.

The claims come in a 300-page document, which concluded that the pandemic most likely came from a lab leak and was the result of a "research-related incident" in Wuhan."
https://www.yahoo.com/news/covid-pandemic-sparked-accidental-leak-232348250.html