[Comparative epidemiology of the resistance of enterobacteriaceae, Staphylococcus and Pseudomonas aeruginosa to fluoroquinolones in an outpatient study].
OBJECTIVE
Since the clinical introduction of fluoroquinolones in general practice for the treatment of a wide range of infections, we have carried out an annual survey of the susceptibilities of Enterobacteriaceae, Staphylococcus and Pseudomonas aeruginosa isolated from domiciliary infections to quinolones (nalidixic acid and ofloxacin) as well as to amoxycillin, co-amoxyclav and co-trimoxazole.


METHODS
From 1990 to 1993, within the same three month period of the year, a total of 1750 strains were collected at three private clinical laboratories in greater Paris. The in vitro activities of antibiotics were evaluated using the standard disc-diffusion test. MICs of ofloxacin were determined for all intermediate and resistant strains.


RESULTS
Resistance to quinolones remained unchanged during this four year period. Among Enterobacteriaceae, less than 3% of strains were resistant to fluoroquinolones. A regular decrease in the annual percentage of co-amoxyclav susceptible strains was noted: from 82.4% in 1990 to 68.1% in 1993 (p < 0.001). Resistance (intermediate plus resistant strains) was more frequent in patients more than 60 years old, in those who had received quinolones up to one month before specimen collection or in those who had been recently (within 3 months) hospitalised. Similar data were obtained for amoxycillin or co-amoxyclav.


CONCLUSIONS
Our study, together with those performed by other European investigators, demonstrates that the prevalence of quinolone resistant strains in general practice remains low and stable despite high consumption of fluoroquinolones.
Weber
P
P
Laboratoire du Centre de Diagnostic Médical Galilée, Torcy, Marne-la-Vallée.
Plaisance
J J
JJ
Mancy
C
C
D000293:Adolescent; D000328:Adult; D000368:Aged; D000658:Amoxicillin / Q000494:pharmacology; D019818:Clavulanic Acid; D002969:Clavulanic Acids / Q000494:pharmacology; D004352:Drug Resistance, Microbial; D004359:Drug Therapy, Combination / Q000494:pharmacology; D004755:Enterobacteriaceae / Q000187:drug effects*; D005260:Female; D005602:France; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D015242:Ofloxacin / Q000494:pharmacology*; D011550:Pseudomonas aeruginosa / Q000187:drug effects*; D015363:Quinolones / Q000494:pharmacology*; D013210:Staphylococcus / Q000187:drug effects*; D015662:Trimethoprim, Sulfamethoxazole Drug Combination / Q000494:pharmacology
D002969:Clavulanic Acids; D015363:Quinolones; D019818:Clavulanic Acid; D000658:Amoxicillin; D015662:Trimethoprim, Sulfamethoxazole Drug Combination; D015242:Ofloxacin
Epidémiologie comparée de la résistance aux fluoroquinolones chez les Enterobacteriaceae, Staphylococcus et Pseudomonas aeruginosa en médecine de ville.