Epidemiological Surveillance on Dengue Hemorrhagic Fever in Upper North, 1997-2001

Punnarai Veeraseatakul, Varin Boonyen, Salakchit Chutipongvivate
Regional Medical Sciences Center, Chiangmai, Department of Medical Sciences

     Dengue Hemorrhagic Fever is an important public health disease caused by dengue virus. To support the surveillance system of dengue hemorrhagic fever in upper north, between January 1997 to December 2001, 2,663 specimens and clinical prediagnosis datas of dengue suspected patients from hospital in Chiangmai, Lumpoon, Lumpang and mae hon son provinces were delivered to the Regional Medical Sciences Center, Chiangmai for laboratory confirmation of dengue infection by determining antibody to dengue virus using Capture Enzyme Linked Immunosorbent Assay and Hemagglutination Inhibition. The results gathered throughout 5 year, it was found that 1,534 cases (57.6%) were dengue infection, 754 cases (28.3%) were no dengue infection. Dengue antibody response were 1,252 cases of secondary infection (81.6%). The highest peak of dengue infection was observed in 1998 (69.8%). Most of dengue infection cases were in age group greater than 14 year at 40.1%. Between male and female,infection rate was 1:1.1. The confirmed dengue infection among patients with clinical diagnosis of dengue fever, dengue hemorrhagic fever and dengue shock syndrom were 35.9%, 70.9% and 100% respectively. These finding will benefit for planning and evaluation of dengue hemorrhagic fever control.

ที่มา : การประชุมวิชาการกรมวิทยาศาสตร์การแพทย์ ครั้งที่ 13