I think the Japanese have a built in immunity. There is no other explanation.
They are the most homogeneous country in the world. It wouldn't surprise me if Japan has seen this virus a few times over the past centuries and has a natural selection immunity. No one can really confirm or even know.
This message has been modified
Originally posted on Mar 24, 2020 at 5:01:19pm
Message modified by Josef K on Mar 24, 2020 at 5:02:04pm