[mysterio]

It’s winter where your article takes place. Where are all the deaths?

From the article :

Flu behaves differently in tropical countries, explains Dr. Anthony Mounts, an expert with the WHO's global influenza program. In the tropics flu peaks a couple of times a year, but at neither point is there as much flu activity as is seen during a true winter wave such as Canada or the countries of Northern Europe experience.

[netmilsmom]

Not all of the Southern hemisphere is tropical.