It was the worst epidemic in American history, killing over 600,000 — until it disappeared as mysteriously as it had begun.
When influenza began to cut its deadly path across the U.S. in the autumn of 1918, it did so with such speed and fatal efficiency that some believed sinister forces were at work.
After the the worldwide 1918 influenza pandemic, there was one key question: Could it happen again?
San Francisco was spared during the first wave of influenza in the spring of 1918. But as the second wave took its toll on eastern cities, the city prepared for a possible onslaught.