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- 1Secret Cold War bioweapons test exposed millions in Bay Area●The secret Cold War bioweapons test that exposed millions in the Bay Area
A newly resurfaced account details Operation Sea-Spray, a 1950 US Navy experiment in which Serratia marcescens bacteria were sprayed over San Francisco to test how vulnerable the city was to a biological attack. The tests exposed some 800,000 residents without their knowledge and were later linked to infections and at least one death, renewing debate over government accountability and consent.