Two clustering diffusion patterns identified from the 2001-2003 dengue epidemic, Kaohsiung, Taiwan
Autor(es): Kan Chih-Chun,Lee Pei-Fen,Wen Tzai-Hung,Chao Day-Yu,Wu Min-Huei,Lin Neal H,Huang Scott Yan-Jang,Shang Chuin-Shee,Fan I-Chun,Shu Pei-Yun,Huang Jyh-Hsiung,King Chwan-Chuen,Pai Lu
Resumo: This study analyzed the spatio-temporal patterns of 4,587 (94% of the total) confirmed dengue cases in Kaohsiung and Fengshan Cities (a two-city area) that occurred in Taiwan from 2001 to 2003. The epidemic had two simultaneous distinct diffusion patterns. One was a contiguous pattern, mostly limited to 1 km from an initial cluster, reflecting that there was a rapid dispersal of infected Aedes aegypti and viremic persons. The second followed a relocation pattern, involving clusters of cases that diffused over 10 weeks starting from the southern and moving to the northern parts of the two-city area. The virus from one clustering site jumped to several distant areas where it rapidly dispersed through a series of human-mosquito transmission cycles to several localities. In both patterns, transmission of disease quickly enlarged the epidemic areas. Future dengue control efforts would benefit from a timely syndromic surveillance system plus extensive public education on how to avoid further transmission.
Imprenta: The American Journal of Tropical Medicine and Hygiene, v. 79, n. 3, p. 344-352
Identificador do objeto digital: 10.4269/ajtmh.2008.79.344
Descritores: Aedes aegypti - Pathogenesis ; Aedes aegypti - Viral infections ; Aedes aegypti - virus ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Epidemic ; Aedes aegypti - Epidemiology ; Aedes aegypti - Public health
Data de publicação: 2008
