Yeah, the southern hemisphere is getting colder every day, as the northern hemisphere gets warmer every day. That may be one possible explanation as to why. However, I can’t explain why Australia has seen so many cases. Perhaps it’s because more people actually visit there, and they have a larger population of Chinese who had visited Wuhan during the Chinese New Year.
Because it isn’t as heat sensitive as we might hope. Australia is pretty dry. Maybe that’s it. Who knows. We aren’t in Australia.
A day or so ago I read that approximately half of the Australian cases were from people who had visited known coronavirus areas and then returned home.