In Sudan the cases reported are relatively very little (praise and thanks to God Most Gracious.) About 12 total cases.
Then when I searched about the temperature there: it was 40 degrees and another day it was 39 degrees centigrade.
In China, the virus appeared in Winter and then weakened to much extent when the weather became warmer.
In Italy, it was colder maybe, then the disease has now lessened somewhat when the temperature may have become warmer.
In Spain, the same.
In Germany: the measures undertaken may be better in restricting the cases and casualties.
In America: America is generally a cold country: it has a freezing winter where ice accumulates in some regions ..
So in cold countries, it will linger more .. while in hot countries it will end quicker than in the cold countries.
Iran and Iraq: Iran is considered a cold country, Iraq is a hot country: the cases reported in Iran is far more than in Iraq, and the same about death cases.. this in spite of the authenticity of the data or not.
Of course there are other factors: like the strict protective measures and hygiene ..etc.
God is the All-Knowing.