Korean J Epidemiol.  2005 Dec;27(2):70-79.

A Study on the Epidemiologic Characteristics of Scrub Typhus in Gyeongsangbuk-do, 1999-2001

Affiliations
  • 1Department of Preventive Medicine, College of Medicine, Dongguk University, Kroea.
  • 2Department of Occupational and Environmental Medicine, Pohang St. Mary's Hospital, Kroea.
  • 3Department of Social Medicine, Sungkyunkwan University School of Medicine, Kroea.

Abstract

ONJECTIVE: This study was carried out to investigate the epidemiologic characteristics and magnitudes of scrub typhus (tsutsugamushi disease) in Gyeongsangbuk-do, Korea.
METHODS
Resources of data collected were epidemiologic surveillance report to public health centers on each disease occurrence. The authors reviewed 344 epidemiologic surveillance reports for cases of scrub typhus developed in Gyeongsangbuk-do, Korea from Jan 1, 1999 to Dec 31, 2001.
RESULTS
The scrub typhus cases were 376 during three year period, and the incidence was significantly higher in the county area than in the city area. Incidence of scrub typhus was increasing each year. In 344 epidemiologic surveillance reports, the job of the cases was farmer (67.2%), housewife (4.7%), clerk (3.5%). Two hundred ninety eight cases (86.6%) have experienced outdoor activities before development of the scrub typhus. The outdoor places of exposure were dry field (64.8%), rice field (51.7%), hill (12.8), and grass field (9.7%). The symptoms reported were fever (93.3%), headache (83.7%), chill (69.5%), and rash (54.4%).
CONCLUSIONS
Incidence of scrub typhus was increasing in Gyeongsangbuk-do, Korea, this phenomenon may be related to change of climate, the reporting rate of disease and outing activities. Good surveillance and adequate analysis of epidemiologic data is a essential for the prevention of the disease. With this result, high risk population was identified and effective intervention should be done to prevent the disease.

Keyword

Scrub typhus; Epidemiology; Incidence; Leptotrombidium
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