Covid-2019 - 2023-02-02

China's CDC has taken over the responsibility for reporting data. It's no longer daily, but weekly. And the definitions and standards are ambiguous. We're doing our best with it. But Japan's data remains among the most reliable in the world, and historically Japan's new cases match China's as to incidence and relative magnitude. There's been a lot of improvement after a record case-wave in Japan, so our guess is that China is improving too (as its unreliable numbers suggest).