Abstract

IRINO, K. et al. Progression of Salmonella Enteritidis phage type 4 strains in São Paulo State, Brazil. Rev. Inst. Med. trop. S. Paulo [online]. 1996, vol.38, n.3, pp. 193-196. ISSN 0036-4665.  http://dx.doi.org/10.1590/S0036-46651996000300005.

A total of 574 S. Enteritidis strains (383 from human sources and 191 from non-human sources) isolated between 1975-95, in São Paulo State, Brazil, were phagetyped. Among the strains isolated during the period of 1975-92, 80.9% of them belonged to phage type 8 (PT-8), but in 1993 strains of PT-4 accounted for 65.2% of all the S. Enteritidis isolates. In the following years, PT-4 strains accounted for 99.7% and 98.4% of phagetyped S. Enteritidis strains. The results obtained suggested that the current epidemic of S. Enteritidis in São Paulo State is clearly associated with the progression of PT-4 strains.

Keywords : Salmonella; S. Enteritidis; Phage types.