Bacterial Outbreak Infects 3,000 people In China After Gas Leak at Vaccine Lab

Thousands of people in northwest China have tested positive for an infectious bacterial disease after a leak from a state-owned biopharmaceutical plant making animal vaccines.

Health officials in Lanzhou, a city of 2.9million, said 3,245 people had contracted brucellosis, a disease often caused by close contact with infected animals or animal products that can bring about fevers, joint pain and headaches.

Another 1,401 people tested as an early positive for the disease after the authorities screened nearly 22,000 residents. No death has been reported.