Abstract

ANDREU ROMAN, María del Mar; ALLUE TANGO, Marta; BERBEL HERNANDEZ, Clara  and  ANDRES GARCIA, Irene. Salmonella serovar Poona outbreak in a nursery. Rev Pediatr Aten Primaria [online]. 2016, vol.18, n.69, pp.35-43. ISSN 1139-7632.

Introduction: during the first three months of 2011, a gastroenteritis outbreak caused by Salmonella poona was described in one of the Valladolid's nurseries. Objectives: to describe the epidemiologic characteristics of the outbreak, its relation between a supracommunity outbreak and its transmission mechanism. Methods: a descriptive bidireccional study. Starting from an index case a database from the nursery of the children records, the pediatrics and the microbiology records was done. The overall attack rate and the epidemic curve from each classroom was calculated. Results: thirteen cases between five months and five years old were found; all of them were asymptomatic. The overall attack rate was 28,2% without significant difference between the classrooms. Salmonella poona 13,22:z:1,6 was found, and it was identical to that isolated in the national outbreak. Conclusions: it seems that the nursery's outbreak was caused by the same organism related to the supracommunity outbreak and the powdered infant formula was the vehicle involved in the transmission and it allowed the introduction of the organism in the nursery spreading through other pathways between students.

Keywords : Salmonella poona; Powdered infant formula; Nursery; Epidemic outbreak; Gastroenteritis.

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