Antibiotic use and resistance of Streptococcus pneumoniae in The Netherlands during the period 1994-1999

Area of Science:

• Medical Microbiology
• Pharmacology
• Epidemiology

Background:

• Antibiotic resistance is a growing global health concern.
• Streptococcus pneumoniae is a common cause of bacterial infections.
• Monitoring antibiotic use and resistance patterns is crucial for public health.

Purpose of the Study:

• To examine the relationship between antibiotic consumption and Streptococcus pneumoniae resistance in The Netherlands between 1994 and 1999.
• To identify trends in the use of specific antibiotic classes and their impact on bacterial resistance.

Main Methods:

• Retrospective analysis of antibiotic consumption data (defined daily doses per 1000 persons per day).
• Surveillance of antibiotic resistance in routine Streptococcus pneumoniae isolates.
• Correlation analysis between antibiotic use and resistance rates.

Main Results:

• Macrolide use doubled between 1994 and 1997, remaining elevated through 1999.
• Erythromycin resistance in Streptococcus pneumoniae increased from 2.5% in 1994 to 3.8% in 1999.
• Penicillin resistance slightly increased from 0.7% to 1.5% during the study period.
• Tetracycline and co-trimoxazole resistance also showed modest increases.

Conclusions:

• Increased macrolide consumption may be linked to the rise in erythromycin resistance in Streptococcus pneumoniae.
• The observed increase in penicillin resistance was not directly associated with changes in beta-lactam antibiotic use.
• Continued surveillance of antibiotic resistance and consumption is vital.