This week, COVID-19 overtook the 1918 Spanish Flu as the deadliest disease outbreak in American history.

Spanish influenza, at the end of the First World War, was the disease event that had caused the biggest loss of life in our country’s history. The CDC estimates that 675,000 Americans died during that pandemic a century ago, as wave after wave of the illness spread out for two years.

According to STAT’s COVID tracker, deaths in the US passed that number at mid-week. Deaths in the US make up roughly 14% of the nearly 4.7 million COVID-19 fatalities worldwide to date.