Antimicrobial susceptibilities of Pasteurella strains isolated from humans

Area of Science:

• Microbiology
• Infectious Diseases
• Antimicrobial Resistance

Background:

• Pasteurella species are opportunistic pathogens causing various infections in humans.
• Understanding antimicrobial susceptibility patterns is crucial for effective treatment.

Purpose of the Study:

• To determine the in vitro antimicrobial susceptibility of clinical Pasteurella spp. isolates.
• To identify effective therapeutic options for Pasteurella infections.

Main Methods:

• Agar dilution method was used to test 192 clinical strains of Pasteurella spp.
• Isolates were collected from soft tissue pus, respiratory tract, and blood specimens between 1996 and 2003.

Main Results:

• All isolates were susceptible to minocycline, cefotaxime, ofloxacin, ciprofloxacin, and levofloxacin.
• High susceptibility rates were observed for moxifloxacin, amoxicillin, azithromycin, and clarithromycin.
• Lower susceptibility rates (89.4%) were found for telithromycin, especially in respiratory tract isolates.

Conclusions:

• Minocycline and fluoroquinolones are highly effective against clinical Pasteurella spp. isolates.
• Amoxicillin, azithromycin, and clarithromycin demonstrate good in vitro activity.
• Telithromycin may have reduced efficacy against respiratory Pasteurella isolates, warranting careful consideration.