How coronavirus compares to the biggest pandemics since 1900

The COVID-19 outbreak was declared a pandemic by the World Health Organization on March 11. The outbreak began in China in late 2019 and has rapidly spread to more than 150 nations.
Pandemic in perspective
Estimated totals from the Centers for Disease Control and Prevention of the largest pandemics since 1900.
It’s unlikely that the Spanish flu originated in Spain, and scientists are still unsure of the source of the new coronavirus. Several studies say the origin of the outbreak is Hubei