Where are you getting that 50% of the Japanese population has been infected? The World Health organization says 95,000 total cases so far.Responsibility? Cuomo and Newsome, et al, are gambling on a Biden win and a big payday from Nancy when the election is over.
Stopping cases is a fools errand. It is estimated that well over 50% of the Japanese population has been infected. Name a group more disciplined where masks and distancing is concerned? The answer is continuing to improve treatments and mitigation for the highly identifiable high-risk populations.
Japan COVID - Coronavirus Statistics - Worldometer
Japan Coronavirus update with statistics and graphs: total and new cases, deaths per day, mortality and recovery rates, current active cases, recoveries, trends and timeline.
www.worldometers.info