Surveillance of Bacillus cereus Isolates in Korea from 2012 to 2014
Osong Public Health and Research Perspectives
; (6): 71-77, 2017.
Article
in En
| WPRIM
| ID: wpr-648330
Responsible library:
WPRO
ABSTRACT
OBJECTIVES: To investigate the prevalence and toxin production characteristics of non-emetic and emetic Bacillus cereus strains isolated via the laboratory surveillance system in Korea. METHODS: A total of 667 B. cereus strains were collected by the Korea National Research Institute of Health laboratory surveillance system from 2012 to 2014. The collected strains were analyzed by geographical region, season, patient age, and patient sex. Additionally, the prevalence rates of enterotoxin and emetic toxin genes were evaluated. RESULTS: The isolation rate of B. cereus strains increased during the summer, but the isolation rate was evenly distributed among patient age groups. Emetic toxin was produced by 20.2% of the isolated strains. The prevalence rates of five enterotoxin genes (entFM, nheA, cytK2, hblC, and bceT) were 85.0, 78.6, 44.5, 36.6, and 29.7%, respectively, among non-emetic strains and 77.8, 59.3, 17.8, 11.9 and 12.6%, respectively, among emetic strains. Thus, the prevalence rates of all five enterotoxin genes were lower in emetic B. cereus. CONCLUSION: The prevalence of enterotoxin genes differed between non-emetic and emetic B. cereus strains. Among emetic B. cereus strains, the prevalence rates of two enterotoxin genes (cytK2 and hblC) were lower than those among the non-emetic strains. In both the emetic and non-emetic strains isolated in Korea, nheA and entFM were the most prevalent enterotoxin genes.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Seasons
/
Bacillus
/
Bacillus cereus
/
Epidemiology
/
Prevalence
/
Enterotoxins
/
Academies and Institutes
/
Korea
Type of study:
Prevalence_studies
/
Screening_studies
Limits:
Humans
Country/Region as subject:
Asia
Language:
En
Journal:
Osong Public Health and Research Perspectives
Year:
2017
Type:
Article