-
Clearly a lot of tropical or equatorial countries are going to struggle in testing and public health data. I was looking at Gulf States (UAE, Bahrain, Qatar), which have some of the highest tests per million of population ratios in the world. They all had first cases in late January or early February, and all have total cases of less than 6k, and total deaths less than 35. I don't know what other measures they have taken and appreciate warmer climate is one amongst hundreds of factors. I read the abstract from the link you posted, which seemed to say that coronaviruses are highly seasonal.
Also Syria for example has 65 ventilators and 200 tests.