Regarding Quatar (or any warm/hot place): Note that a significant fraction of people spends a lot of time inside. This means the temperature there is actually c

Regarding Quatar (or any warm/hot place): Note that a significant fraction of people spends a lot of time inside. This means the temperature there is actually colder, there's less sunlight (especially UV), and people are closer to each other. Also note that for the common cold, the reason that it spreads more during winter times is not primarily temperature, but the fact that people spend more time inside while ventilating (opening windows) less often. Comparing speed of distribution in different countries is extremely difficult, as there are too many factors at play. The 258 cases in Qatar might have been 500 if it was colder there, no one can proof or refute that.