SciELO - Scientific Electronic Library Online

vol.7 issue5Surveillance of infant deaths in local health systems: assessment of verbal autopsies and of information collected by community health agentsLymphatic filariasis in the Caribbean region: the opportunity for its elimination and certification author indexsubject indexarticles search
Home Page  

Services on Demand




Related links


Revista Panamericana de Salud Pública

On-line version ISSN 1680-5348Print version ISSN 1020-4989


AGUIAR PRIETO, Pablo; CEPERO MARTIN, José A.  and  COUTIN MARIE, Gisele. Drinking water quality and diarrheal diseases in Cuba, 1996-1997. Rev Panam Salud Publica [online]. 2000, vol.7, n.5, pp.313-318. ISSN 1680-5348.

A study was conducted in 1996 and 1997 in 31 Cuban cities having a population greater than 35 000, in order to determine if there was a relationship between drinking water quality and the frequency of acute diarrheal diseases (ADD). We used the level of disinfection (based on chlorine concentration) as well as the level of bacterial contamination (based on the presence of coliform bacteria) as water quality indicators, and the frequency of ADD was calculated on the basis of the number of visits (per 100 000 inhabitants) to individual family physicians and to physicians on call in hospitals and polyclinics that were prompted by ADD. Weekly determinations of chlorine concentrations and monthly measurements of bacterial contamination were performed by taking daily water samples at 2 045 key sites along the water distribution channels in the cities included in the study. In 1996 and 1997, the percentages of samples with good chlorination (residual chlorine =0.3 mg/L) for the entire country were 72.4% and 74.8%, respectively, whereas the percentages of samples with little bacterial contamination (most probable number [MPN] of fecal coliform bacteria =9,2/100 mL) were 87.0% and 76.5%, respectively. Logistic regression revealed, at the local level, an inverse correlation between each of these percentages and the number of medical consultations for ADD (per 100 000 inhabitants), although it was not statistically significant. These results allowed the authors to stratify the cities included in the study according to their different levels of risk for ADD: high risk (23 cities), moderate risk (8 cities), and low risk (0 cities).

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )