Banned in 60 Seconds wrote:
Japan - heavy mask usage, outstanding government response, citizens taking the outbreak seriously
It's not behavior, it's biology:
Nobel laureate Tasuku Honjo, a Japanese physician-scientist and immunologist, said people with Asian and European ancestry have enormous differences in the human leukocyte antigen (HLA) haplotype, genes that control the immune system’s response to a virus.
That might help explain lower Asian death rates, he said, but is unlikely to be the only reason.
Scientists at Chiba University said a whole range of possible genetic factors might condition the body’s response to the virus and deserved further study — even while stressing that there is no evidence yet to back up the idea.
Different immune responses could also play a role.
Tatsuhiko Kodama of the University of Tokyo said preliminary studies show that Japanese people’s immune systems tend to react to the novel coronavirus as though they had previous exposure, and notes that there are centuries of history of coronaviruses emerging from East Asia.
“The enigma of lower death rates in East Asia can be explained by the presence of immunity,” he said.
https://www.washingtonpost.com/world/researchers-ponder-why-covid-appears-more-deadly-in-the-us-and-europe-than-in-asia/2020/05/26/81889d06-8a9f-11ea-9759-6d20ba0f2c0e_story.html