Data Source
The source of cases of laboratory-acquired infection was the Chinese
academic database: CNKI (www.cnki.net), Wanfang
(www.wanfangdata.com.cn).
Similarly, the reported S2 vaccine
outbreak events were collected in this academic database and also the
internet. The search terms were ”Brucella,” ”brucellosis,”
”laboratory-acquired infection” or ”hospital-acquired infection,” S2
vaccine infection events; Search field: Keyword, Abstract, and full
article; search language: Chinese; the retrieval time: from the
construction of the databases to June 2, 2020. Excel 2016 (Microsoft,
Redmond, WA, USA) was used for data processing and analysis.