Revista Peruana de Medicina Experimental y Salud Publica
ISSN 1726-4634 versión impresa
GOMEZ B, Jorge, MOSTORINO E, Rosa, CHINCHAY M, Rosa et al. Seroprevalencia del dengue en el distrito de Casma. Ancash, Perú 2002. Rev. perú. med. exp. salud publica, jul./sep 2005, vol.22, no.3, p.200-204. ISSN 1726-4634.
Objectives: To assess the extent of dengue fever virus infection after the first outbreak that occurred in Casma District, Ancash (February to April 2002). Materials and methods: A seroepidemiological study was performed after the outbreak, 400 blood specimens obtained using a probabilistic, two-staged and conglomerate sampling technique were collected in filter paper, and they were analyzed for this study. A patient was considered as infected if a positive result in the IgM and IgG capture-ELISA for dengue fever was found. Results: Prevalence of dengue fever infection on the basis of this seroepidemiological survey was 14,1% (95% confidence interval [CI]: 9,8-18,4%). Consequently, it is estimated that 3939 cases of dengue fever serotype 1 infection occurred in Casma District during the outbreak from February to May 2002. 60% of all positive cases developed symptoms, the Epidemiological Surveillance system reported only 832 cases of classic dengue fever and no severe cases were found. Conclusions: Seroprevalence in the first dengue fever outbreak in Casma District in April 2002 was 14,1% The epidemiological surveillance system detected 21% of the total estimated number of infected persons (approximately 1:5); and 32,5% of cases that developed symptoms.
Palabras llave: Dengue; Outbreak; Cross -Sectional Studies; Epidemiologic surveillance; Peru (source: DeCS BIREME).
Instituto Nacional de Salud
Cápac Yupanqui 1400 - Jesús María
Apartado Postal 471
Teléfono : ( 51-1) 4719920 Anexo 162
Fax: ( 51-1) 4717443