[Pilsner]

What do these poor, hot countries have in common? It is the lack of, or at least relatively low levels of air conditioning.

I doubt air conditioning is much used in Wuhan in January. Average high/low January temperatures in Wuhan 47°/33°.

[Black Agnes]

That poster’s point was that the virus (like most coronaviruses) doesn’t like heat/humidity.

It loves cool temps and air conditioning.

SARS was the same.