This title uses a then-and-now approach to compare the spread of the influenza virus in the 1918 pandemic with that of SARS-CoV-2 in the COVID-19 pandemic. Powerful photographs and content-packed sidebars will help readers explore how these two crises have impacted the world. Aligned to Common Core Standards and correlated to state standards. Abdo & Daughters is an imprint of Abdo Publishing, a division of ABDO.