INTRODUCTION The resistance to the clinically important antimicrobial agents, particularly the fluoroquinolones and the macrolides, is increasing among the Campylobacter isolates. Only limited data is available regarding the changing antimicrobial resistance pattern in the Indian scenario. METHODOLOGY Three hundred fifty cases (ages ≤12years) of acute diarrhoea, who were admitted to a tertiar...

The "HACEK" organisms are a group of fastidious Gram-negative bacteria that cause a variety of infections, including infective endocarditis. Antimicrobial susceptibility testing is not universally available, and therapy for these infections is often empirical. We report the antimicrobial susceptibilities of 70 clinical HACEK isolates to 18 antimicrobials. All isolates were susceptible to ceftri...

We determined the antimicrobial susceptibilities of 122 recent clinical isolates of Haemophilus ducreyi to 24 antimicrobial agents. All isolates produced beta-lactamase and were resistant to penicillins. The majority of strains were also resistant to tetracycline, doxycycline, and sulfamethoxazole. All isolates were susceptible to macrolides, quinolones, extended-spectrum cephalosporins, specti...

Virulent cells (T1 colony type) and avirulent cells (T4 colony type) of Neisseria gonorrhoeae were grown in a defined liquid medium in the presence of different antimicrobial agents. Bacteria of T1 colony type were found to be more resistant than bacteria of T4 colony type to the inhibitory effects of specific concentrations of ampicillin (0.50 mug/ml) and penicillin (0.01 mug/ml). Bacteria of ...

Nosocomial bloodstream infections across the United States and in Europe are increasingly attributable to gram-positive species--a trend that represents a reversal of the gram-negative predominance of the previous decades. Data from Memorial Sloan-Kettering Cancer Center and elsewhere show that patients with hematologic malignancies or patients who are immunocompromised because of anticancer tr...