https://en.wikipedia.org/wiki/2002%E2%80%932004_SARS_outbreak#November_2002 https://en.wikipedia.org/wiki/2002%E2%80%932004_SARS_outbrea... China attempted inf

https://en.wikipedia.org/wiki/2002%E2%80%932004_SARS_outbreak#November_2002 https://en.wikipedia.org/wiki/2002%E2%80%932004_SARS_outbrea... China attempted information control on SARS-1, but rolled most of it back by April. They still haven't done this for SARS-2. That's not proof, but is a difference. Enough small differences can add up to a large difference.