TLDR: Demaneuf soon discovered that there had been four incidents of SARS-related lab breaches since 2004, two occuring at a top laboratory in Beijing. Due to o

TLDR: Demaneuf soon discovered that there had been four incidents of SARS-related lab breaches since 2004, two occuring at a top laboratory in Beijing. Due to overcrowding there, a live SARS virus that had been improperly deactivated, had been moved to a refrigerator in a corridor. A graduate student then examined it in the electron microscope room and sparked an outbreak.