Three departments in Gansu province report the investigation

Lanzhou report on December 26, the provincial health and Health Commission, the provincial agricultural and rural department, and the Lanzhou municipal government jointly reported the investigation and disposal of brucella antibody positive events of Lanzhou Veterinary Institute, Chinese Academy of Agricultural Sciences.

The specific process of the brucella antibody positive event in Lanzhou Veterinary Research Institute is: on November 28, 2019, two students from the FMD prevention and control technology team of Lanzhou Veterinary Research Institute of Chinese Academy of Agricultural Sciences (hereinafter referred to as Lanzhou Veterinary Research Institute) detected brucella antibody positive. On November 29, the number of brucella antibody positive students in the team increased to 4, and then the students in the team collectively carried out the brucella antibody test, and the antibody positive people were detected in succession, which led to the concern of all the students. Many students went to the hospital or the CDC to carry out the brucella antibody test by themselves. After the occurrence of brucella antibody positive event in Lanzhou Animal Research Institute, the provincial Party committee and the provincial government attached great importance to it. The provincial government established a disposal coordination leading group to fully carry out traceability investigation, detection and diagnosis, epidemiological investigation and other work, closed all laboratories of Lanzhou Animal Research Institute, and stopped relevant experimental activities. The provincial health and Health Commission has set up a green channel in the secondary and above medical institutions of Lanzhou city to provide standardized treatment for antibody positive personnel who need treatment. The national health and Health Commission and the Ministry of agriculture and rural areas have sent more than 40 experts to Lanzhou to form an investigation team with provincial and municipal experts to conduct a comprehensive investigation of the incident.

An investigation group composed of national and provincial experts conducted a comprehensive investigation on Lanzhou Institute of zoology and the adjacent Zhongmu Lanzhou bio pharmaceutical plant, and In the production period, the main wind direction in this area is southeast wind. Lanzhou Veterinary Research Institute is located in the downwind direction of Lanzhou bio pharmaceutical factory of China animal husbandry. Antibody is positive when human body inhales or mucous membrane contacts, which causes brucella antibody positive event in Lanzhou Veterinary Research Institute. This incident is an accident and an exposure in a short time. The production workshop of Brucella vaccine of Lanzhou biological pharmaceutical factory, which caused the incident, stopped production on December 7, 2019. Since December, antibody has been detected in students and faculty of Lanzhou University. At present, 3365 people have been detected, 22 of them are positive for brucella antibody, with a positive rate of 0.65%. Through epidemiological investigation, 6 of them have been involved in all activities of animal research in Lanzhou in July this year, and the rest are in line with the epidemic trend of brucellosis in Chengguan District of Lanzhou city. As of 16:00 on December 25, there were 671 primary screening tests of Brucella antibodies in the sera of students and staff of Lanzhou Institute of zoology, and 181 cases were confirmed to be antibody positive by laboratory recheck. Except for one patient who had clinical symptoms, the others had no clinical symptoms and no disease. Our province will do a good job in testing and diagnosis in time in the next step. The provincial health and Health Commission has set up a green service channel and hotline in the secondary and above medical institutions of Lanzhou city. The residents around Zhongmu Lanzhou bio pharmaceutical factory can voluntarily go to the medical institutions for free consultation, testing and treatment.