Centuraindemic 

A significant viral or pathogenic infection that spans more than 1 country of the world infection millions to 10s and 100s of millions of humans and killing similar numbers during its initial phases or waves of infection and mutation. This infection occurs roughly every 100 years and lasts for more than 12 consecutive months. Immunization efforts may be made by nations with varying results of "herd immunity".

The Great Plague - 1720, Cholera Outbreak - 1820, The Spanish Flu - 1920, Covid-19 - 2020 all acure 100 years apart. Hence Centur (coming from the term Century or 100 years), Ain (coming from Taint or to infect) and Demic (Meaning to pertain to people or populations) or Centuraindemic. (Sen-ture-ane-demic)

Centuraindemic by William Rickard May 16, 2021