The death rate has been climbing, today it's 2.5%. Which is a sign that either the reported cases is much lower than the official count or the virus is getting

The death rate has been climbing, today it's 2.5%. Which is a sign that either the reported cases is much lower than the official count or the virus is getting deadlier. From the data we have from other countries it looks like the death rate is stable/low which points to a huge amount of unreported cases. What is the death rate for the 360 person flu group?