Weird indeed.
It's low in a number of former USSR states.
Very weird.
Maybe it was engineered in such a way originally ? And not created in China, but merely stored in the Chinese bio-weapons facility ?
It is an escaped bio-weapon from the facility in Wuhan. The doctor who knew who patient zero was has been permanently silenced.
Engineered to be infectious with no symptoms.
The saving grace is that it isn't one of the nastier weapons.
Of course all the authorities will deny this, and put out...