An outbreak of beta-hemolytic streptococcal caused tonsillitis in a hospital of Chengdu city.

Shuang Zhang; Min Feng; Wei Zeng; Xiaoli Tuo; Yunfeng HE; Han AN; Yan HE; Wenwei Chen; Zhu Liu; Ge Feng; Jun Chen; Fengman Dou

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An outbreak of beta-hemolytic streptococcal caused tonsillitis in a hospital of Chengdu city.

Author: Shuang ZHANG ¹ ; Min FENG ¹ ; Wei ZENG ¹ ; Xiaoli TUO ¹ ; Yunfeng HE ¹ ; Han AN ¹ ; Yan HE ¹ ; Wenwei CHEN ¹ ; Zhu LIU ¹ ; Ge FENG ¹ ; Jun CHEN ¹ ; Fengman DOU ²
Author Information

1. Chengdu Center for Disease Control and Prevention, Chengdu 610041, China.
2. Chengdu Center for Disease Control and Prevention, Chengdu 610041, China. Email: 2603398142@qq.com.
Publication Type:Journal Article
MeSH: Adolescent; Adult; Case-Control Studies; Cross Infection; epidemiology; Disease Outbreaks; Female; Health Personnel; Hospitals; Humans; Male; Streptococcal Infections; epidemiology; Streptococcus pyogenes; Tonsillitis; epidemiology; microbiology
From: Chinese Journal of Epidemiology 2014;35(3):295-298
CountryChina
Language:Chinese
Abstract:
OBJECTIVETo investigate an outbreak of beta-hemolytic streptococcal tonsillitis in a hospital.
METHODSA case-control study was conducted with a self-made questionnaire to collect the risk factors. Univariate and multivariate logistic regression model were used to explore the relationship between risk factors and morbidity.
RESULTS74 cases were occurred during the outbreak with patients aged mainly between 20-30 and more females than males. Most cases appeared abrupt onset between Aug., 20-22. All the patients were hospital workers, with majority as nurses and doctors from the operating room, department of anesthesiology and surgical related departments (71.62%). All patients shared the same experience-eating lunch in the dining room on Aug 19(odds ratio 6.67, 95% confidence interval 1.92-23.23). Beta-hemolytic streptococci was observed from cultures of the throats from the patients.
CONCLUSIONThe outbreak was an explosive epidemic of tonsillitis in a hospital, caused by beta-hemolytic streptococci. Food provided from the dining room attached to the operating theater on August, 19 seemed to be the risk factor.