| [antimicrobial resistance of shigella spp. in córdoba, argentina, during the period 1990-1997]. | this study analyzed the evolution of antimicrobial resistance in 771 isolates of shigella spp. obtained from a total of 9,195 feces cultures done between 1990 and 1997 in a children's hospital in córdoba, argentina. s. flexneri, which was responsible for 73% of the shigella infections, was the species with the greatest resistance. the frequency of s. flexneri resistance to the three antibiotics most used (ampicillin, trimethoprim-sulfamethoxazole, and chloramphenicol) increased from 10% in 1990 ... | 2000 | 10748662 |