Resumen

SARDINAS PENA, Olivia; GARCIA MELIAN, Maricel; CASTILLO, Ibian  y  FERNANDEZ NOVO, Marta. Physico-chemical evaluation of the water from reservoirs positive to Aedes aegypti foci. Rev Cubana Hig Epidemiol [online]. 2008, vol.46, n.2. ISSN 0253-1751.

AIM: to perform the physical-chemical evaluation of the reservoirs positive to Aedes aegypti foci in Cotorro municipality, Havana City. METHODS: the sampling was carried out from june 2004 to july 2005. The universe included 86 foci of Aedes aegypti confirmed in the laboratory of the Municipal Centre of Hygiene and Epidemiology, where there were more than 500 mL of water in risk areas, defined by the Municipal Department of Antivectorial Fight. RESULTS: the foci accounted for 41.3 % of all the foci identified in the 3 health areas. The collected sample represented 32.5 % of all foci. pH remained in an interval of 6.80-7.11, turbidity was between 5.0-7.8 U, and conductivity was between 406-909 µS/cm. It was found that the concentration of nitrate was between 6.25-14.26 mg/L, and that of nitrite between < 0.006-3.62 mg/L. CONCLUSIONS: the evaluation of physical-chemical features, pH, turbidity, and nitrates in reservoirs positive to Aedes aegypti foci did not exceed the values established in the cuban standard. The nitrite concentration surpassed the cuban standard in 17.8 % of all samples.

Palabras clave : Dengue; physical-chemical assays; water quality; breedings; Aedes aegypti.

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