The Health Commission of Lanzhou, the capital city of Gansu province, confirmed that 3,245 people had contracted the disease brucellosis, which is often caused by contact with livestock carrying the bacteria brucella.
While producing Brucella vaccines for animal use, the factory used expired disinfectants and sanitizers -- meaning not all bacteria were eradicated in the waste gas.
This contaminated waste gas formed aerosols that contained the bacteria -- and leaked into the air, carried by wind down to the Lanzhou Veterinary Research Institute, where the outbreak first hit.
a wechat piece is titled "Once again, 'rumours' turned out to be prophecy"— Chenchen Zhang🤦🏻♀️ (@chenchenzh) September 17, 2020
when the leak happened last summer, there were people saying on the internet that hundreds of nearby residents got infected. Local authorities quickly called it "rumour".https://t.co/wLXRVTavxI https://t.co/GqNA41LFl0