A Clostridium perfringens Related Foodborne Diarrhea Outbreak in an Elderly Care Center - Beijing Municipality,
Dongran Zhang1, Xinhui Guo2, Yunqi Zhang3
1Fangshan Center for Disease Control and Prevention, Beijing, China.
What Is Already Known About This Topic?:
Clostridium perfringens is a gram-positive, anaerobic, spore-forming bacillus widely distributed in the environment. Enterotoxin-producing strains of C. perfringens can cause foodborne diarrheal outbreaks in humans, with incubation periods typically ranging from 2 to 36 hours.
What Is Added By This Report?:
Investigation identified 98 cases aged 22-99 years. All patients experienced diarrhea. The epidemic curve suggested a point-source outbreak. Chinese hamburgers were identified as the suspected food vehicle [odds ratio (OR)=6.6, 95% confidence interval (CI): 1.7, 37.1]. A total of 23 patient samples and 1 Chinese hamburger sample tested positive for C. perfringens.
What Are The Implications For Public Health Practice?:
The slow cooling process, a common procedure during the "lu" () braising technique in Chinese cuisine, could potentially allow C. perfringens to proliferate significantly and produce toxins. Rapid cooling through the critical temperature range of 15-55 ℃ may effectively mitigate this risk.
Related Concept Videos
Adrenergic Receptors: ɑ Subtype
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
Physical Properties of Amines
Ammeter
When an ammeter is used to measure the...
The Aorta
The average diameter of the aorta is approximately 2-3 cm, but the size can vary depending on the section of the aorta and the individual's age, sex, and body size. The aorta is...
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
Preparation of 1° Amines: Azide Synthesis
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...


