Photos show how San Francisco emerged from a lockdown too soon during the 1918 Spanish flu pandemic, leading to an even deadlier second wave that rampaged through the city

· San Francisco received national praise for its early, proactive response to the Spanish flu pandemic in the fall of 1918.
· But when the number of cases tapered off by November 1918, the city relaxed restrictions on the public too early, ultimately leaving San Francisco with one of the highest death rates in the US by the...