Brief communication (Original). Changing epidemiology of dengue patients in Ratchaburi, Thailand

Background: Epidemiological data of dengue patients in Ratchaburi, Thailand have been reviewed from the year 2000 through 2010. However, with the changes in population structure and lifestyle, a more detailed analysis is needed.

Objective: We described the changes in the epidemiology of dengue patients in Ratchaburi province, Thailand.

Materials and Method: Cases of dengue patients reported by Ratchaburi Provincial Office, Ministry of Public Health, Thailand.

Result: During the years 2000 to 2010, the rate of dengue patients in Ratchaburi, Thailand varied from 123.45 per 100,000 population in 2003 to 394.25 per 100,000 population in 2008. The case fatality rate varied from 0-0.62%. The disease was seen all year round with a higher incidence in the rainy season. Although the highest attack rate has been observed amongst children below 15 years old, a trend of shift in age group towards older children and adults has been seen during the past decade.

Conclusion: Dengue patients are common in Ratchaburi, Thailand causing heavy burden on the health system. The case fatality rate was between 0-0.62% throughout the period of study indicating early recognition and improved management of dengue patients. The trend towards higher age in dengue patients during the past decade is a problem of concern and needs further clarification.