[Resistance to antibiotics of Salmonellae other than typhi and paratyphi isolated in Algeria from 1979 to 1985]. / Résistance aux antibiotiques des Salmonella, autres que typhi et paratyphi isolées en Algérie de 1979 à 1985.

Monitoring of the antibiotic resistance patterns of non typhoid Salmonella is needed. In this paper, we report the results of our study of strains isolated in Algeria from 1979 through 1985. Studied strains were isolated in our laboratory from stool or blood samples or sent to us for confirmation of the diagnosis. We used agar diffusion with IPA 20 medium (Mueller-Hinton medium with tryptophan). Of 3,072 strains tested, 2,467 (80.3%) were resistant to one or more antibiotics. For the most frequent serotypes, the resistance was about 99% whereas, for less frequent ones, it was about 51%. The most part of strains were found to be resistant to more than two antibiotics. The strains showed high rate of resistance to (in decreasing order): ampicillin, sulfamides, chloramphenicol, streptomycin and tetracycline.

[Sensitivity to antibiotics of Salmonella typhi and paratyphi strains isolated in Algeria 1979-1984]. / Sensibilité aux antibiotiques des souches de Salmonella typho-paratyphoïdiques isolées en Algérie de 1979 à 1984.

Outbreaks of typhoid fever due to multiresistant strains of S. typhi have occurred in some countries. Monitoring of the susceptibility of S. typhi and paratyphi strains to antibiotics, especially those used to treat Salmonella infections, is therefore essential. In this paper, we report the results of our study of strains isolated in Algeria from 1979 through 1984. Studied strains were isolated in our laboratory from stool or blood samples or sent to us for confirmation of the diagnosis. We used agar dilution with IPA 20 medium (Mueller-Hinton medium enriched with tryptophan). 6,178 strains were tested, including 5,940 S. typhi strains (96.15%), 123 S. paratyphi A strains (1.99%) and 115 S. paratyphi B strains (1.86%). No resistance was found among the strains tested, whereas 7 resistant strains had been found between July 1973 and December 1978. These results indicate that resistant strains have not spread. However, as new resistant strains might emerge in the future, continued monitoring is needed.

[Evolution of the repartition of enteropathogenic enterobacteria serotypes isolated in Algeria from 1974 to 1977]. / Evolution de la répartition des sérotypes d'entérobactéries entéropathogénes isolés en Algérie de 1974 a 1977.

The authors survey the enteropathogenic enterobacteria studied from 1974 to 1977 and draw the following conclusions : S. typhi is still the predominant serotype. Among Salmonella, other than S. typhi and S. paratyphi, S. wien remains the most frequently reported serotype while progressively decreasing from 1974 to 1976 and is supplanted by S. infantis in 1977. Among the 847 strains of Shigella examined, a high frequency of Shigella flexneri is noted with Shigella sonnei following by a wide margin. As regards the enteropathogenic E. coli the serotypes 0111 : K 68 (B4) and 0125 : K 70 (B15) were isolated, frequently from 1974 to 1976 but the serotype 0119 : K 69 (B14) became the most frequent in 1977.