My understanding of Covid-19 is that, there are some climatic factors involved in seed spread of this virus. As it started from the area of China which falls under temperate zone, its second victim was Iran’s city Qom which also falls under temperate zone and third is Italy which is completely in temperate zone.
Data from two countries from Temperate zone and three countries from Tropical zone was compared. The days counted from the 100 cases each country reached as day one and further days studied on equal basis.
Comment: Probably A Good News: Covid-19 Is Not Spreading Fast In Tropical Region Like In Temperate Region,
Journal of Bioresource Management, 7