Spanish Flu Killed Many
I had a little bird,
Its name was Enza,
I opened the window,
Killing nearly 50-100 million humans, the Spanish Flu has killed more in a single year compared to the four years of the Black Death Plague back in 1347-1351. It's infectious period had come about the year of 1918-1919, spreading globally.
The Flu had infected humans in the ages of 15-40, seeming strange for most other influenza's had affected elderly and children, but not this flu.
The mortality rate was a near 2.5%, way higher than the previous influenza's that had only been 0.3% or lower.
It's origin is to be thought to be from a rare genetic shift in the influenza in an area in China