Marranzano M, D'Angelo M, Agodi A, Santangelo C
Istituto di Igiene e Medicina Preventiva, Universitá di Catania.
Boll Ist Sieroter Milan. 1990;69(1):305-7.
A Salmonella typhi strain resistant to ampicillin, streptomycin and sulfonamides was isolated in Catania in 1988. It has been shown that these resistances were encoded by an auto-transferable R-plasmid, of molecular weight 70 Md, belonging to the incompatibility group B.
