Outbreak investigation of pertussis in an elementary school: a case-control study among vaccinated students
Clinical and Experimental Vaccine Research
;
: 70-75, 2018.
Article
in English
| WPRIM
| ID: wpr-739635
ABSTRACT
PURPOSE:
A pertussis patient from an elementary school, in Gyeonggi Province, Korea, was notified to public health authority on July 25, 2017. Epidemiologic investigation was conducted to identify the magnitude, possible source of infection and risk factors for this outbreak on August 17, 2017. MATERIALS ANDMETHODS:
A case was defined as the school student experiencing cough for more than two weeks with or without paroxysmal, whoop, or post-tussive vomiting. Control was defined as the student polymerase chain reaction-negative at the school. School based surveillance was implemented to identify additional cases.RESULTS:
From June 29 to August 27, 2017, nine patients of pertussis were identified from an elementary school. Among nine cases, eight were confirmed by polymerase chain reaction positive. All cases had cough, one (11%) had post-tussive vomiting, and one (11%) had fever. Eight cases had macrolide for 7 days in outpatient clinic, and one case admitted in a hospital. There was no significant difference of demographic factors including gender (p=0.49), age group (p=0.97), number of series of vaccination of pertussis (p=0.52), the number of participation of after school activity (p=0.28), and the time elapsed since last vaccination (p=0.42). However, we found the history of contact within the classroom or after-school activity was only the independent risk factor among all the demographic factors collected (odds ratio, 63.61; 95% confidence interval, 4.35 to 930.79).CONCLUSION:
The contributing factor for transmission is associated with the case-contact. Immediate identification of pertussis with use of appropriate diagnostic test may help to avoid a large number of cases.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Vomiting
/
Vaccines
/
Case-Control Studies
/
Whooping Cough
/
Demography
/
Polymerase Chain Reaction
/
Public Health
/
Disease Outbreaks
/
Risk Factors
/
Vaccination
Type of study:
Etiology study
/
Observational study
/
Prognostic study
Limits:
Humans
Country/Region as subject:
Asia
Language:
English
Journal:
Clinical and Experimental Vaccine Research
Year:
2018
Type:
Article
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