The 1918 influenza pandemic remains the deadliest in modern history, killing tens of millions — and leaving scientists with enduring questions about how it began. A century later, a virologist and ...

Immunization against the flu as we know it today was not practiced in 1918, and thus played no role in ending the pandemic. Exposure to prior strains of the flu may have offered some protection. For ...

As the U.S. surpass 675,000 COVID-19 deaths, we look back at the 1918 pandemic. Editors note: Some of the images below are animations showing two images and may take longer to load. There are strong ...