1. Division of Malaria and Parasitic Disease, Korea Centers for Disease Control and Prevention (KCDC), Seoul 122-701, Korea.
2. Pusan National University Yangsan Hospital, Yangsan 626-770, Korea.
3. Department of Biological Sciences, Inha University, Incheon 402-751, Korea.
4. Division of Epidemic Intelligence Service of KCDC, Seoul 122-701, Korea.
5. Division of Communicable Diseases of KCDC, Seoul 122-701, Korea.
6. Department of Parasitology, College of Medicine, Inha University, Incheon 400-712, Korea.
7. Director, KCDC, Seoul 122-701, Korea.