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Associated factors in distinguishing patients with brucellosis from suspected cases.

Luo, Jingjing; Yang, Huixin; Hu, Fangfang; Zhang, Siwen; Wang, Taijun; Zhao, Qian; Wang, Ruize; Zhen, Qing.
BMC Infect Dis; 19(1): 1038, 2019 Dec 09.
Artigo em Inglês | MEDLINE | Dez 2019 | ID: mdl-31818269
Resumo: BACKGROUND: To investigate the risk factors for brucellosis in suspected cases of the disease. METHODS: A self-designed questionnaire was developed to collect data from 3557 people whose initial visit site was the Songyuan Center for Disease Control and Prevention (CDC) from January 1st, 2009 to December 31st, 2012. After collecting blood samples, a plate agglutination test (PAT) and serum agglutination test (SAT) were used to distinguish the patients with brucellosis from the suspected cases. RESULTS: Sex, occupation (farmers and herdsmen), contact with abortion products, and contact with feces were the main risk factors for brucellosis in the suspected cases (all P < 0.05). No difference existed between the confirmed cases and suspected cases in the demographic characteristics, contact with animals (except swine), contact with substances, or clinical symptoms (except fever). However, the confirmed cases showed significant differences from people without brucellosis in demographic characteristics, contact with animals (except cattle and swine), contact with substances, and clinical symptoms. Suspected cases exhibited significant differences from people without brucellosis in the demographic characteristics (except education), contact with animals (except swine), contact with substances (except dust), and clinical symptoms (except chills and acratia). Brucella was cultured from the blood samples of three of 30 suspected cases with fever. Using AMOS-PCR and agarose electrophoresis, the detailed species of Brucella strain was identified as Brucella melitensis. CONCLUSIONS: Abortion products and feces are the main risk factors for brucellosis in suspected cases of the disease. Pyrexia in suspected cases with a history of contact with abortion products or feces should raise suspicion for the disease.