Secret Navy Biotest Over San Francisco

In 1950, the U.S. Navy carried out a secret biological experiment on its

own people. Without warning or consent, Navy ships sprayed clouds of bacteria

over San Francisco, releasing them into the city’s fog to see how a biological attack might spread.

Residents breathed it in. They had no idea they were part of a military test.

Within days, hospitals filled with sick patients. At least one man died after developing

a rare infection linked to the experiment. The public was never informed. The operation was

part of a broader Cold War program designed to test how vulnerable American cities were to biological

warfare. Researchers later dismissed the bacteria as “harmless,” even as medical records