... No cases at all in South America? Or Mexico?
How would you know?
Same problem with India and Africa
You could be right, because it is not yet a recognized epidemic in some countries. Another factor could be not many Chinese vacation in India or Mexico. I am sailing tomorrow on a cruise to the Bahama’s area and don’t expect many from country of China on ship where it is now an epidemic. And the ship is not allowing anyone who recently visited China, including the staff.