Maybe compare CO map with regions where COVID is present and spreads? and also humidity.
China has very bad CO level.
Maybe air quality affects too/ or even effects more?
Cas virus attacks lungs. And so, in dirty air regions people have heavier disease.
Just b4 it started in Italy - i was checking CO map and wondering why is it bad CO situation in the north of Italy, - is it bec of cars or industry?

Maybe compare CO map with regions where COVID is present and spreads? and also humidity.
China has very bad CO level.
Maybe air quality affects too/ or even effects more?
Cas virus attacks lungs. And so, in dirty air regions people have heavier disease.
Just b4 it started in Italy - i was checking CO map and wondering why is it bad CO situation in the north of Italy, - is it bec of cars or industry?