Operation Sea-Spray was a 1950 U.S. Navy secret biological warfare experiment in which Serratia marcescens and Bacillus globigii bacteria were sprayed over the San Francisco Bay Area in California, in order to determine how vulnerable a city like San Francisco may be to a bioweapon attack. There has been speculation that the experiment may have contributed to one death and at least 10 illnesses, but no link has ever been demonstrated.
Military test
Starting on September 20, 1950, and continuing until September 27, the U.S. Navy released the two types of bacteria from a ship off the shore of San Francisco. Based on results from monitoring equipment at 43 locations around the city, the Army determined that San Francisco had received enough of a dose for nearly all of the city's 800,000 residents to inhale at least 5,000 of the particles. This is within the range of infectivity for anthrax.
Illnesses
On October 11, 1950, eleven residents checked into Stanford Hospital near San Francisco with very rare, serious urinary tract infections. Although ten recovered, Edward J...
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