https://edition.cnn.com/2020/11/30/asia/wuhan-china-covid-intl/index.html
Key findings:
Chinese officials gave the world more optimistic data than they had access to internally
China's system took on average 23 days to diagnose confirmed patients, and testing failures meant most received negative results until January 10
A history of underfunding, understaffing, poor morale and bureaucratic models of governance hampered China's early warning system, internal audits found
A large and previously undisclosed outbreak of influenza happened in early December in Hubei province.