This is a good reminder from a recent article, discussing the covered-up Sverdlovsk lab leak:
Another good one to keep in mind, from the UK back in 2007:
And more recently in China (December 2019):
And the Beijing SARS leaks in 2004, with an attempted cover-up of the first 2 primary cases.
The WHO gave up, handling the investigation over to the Chinese side which did not even publish the report - only a few extracts.
A taste of things to come.
See also my previous post for the astonishing parallels between the situation today and Sverdlovsk: