Acidometric Agar Plate Method for Ampicillin Susceptibility Testing of Haemophilus influenzae

AUTOR(ES)

Park, Choong H.

RESUMO

The need for an accurate and rapid method of testing ampicillin susceptibility of Haemophilus influenzae, especially strains isolated from patients with meningitis and septicemia, is indisputable. Various methods have been employed for this purpose. Each has advantages and disadvantages. This report describes a modification of the capillary acidometric procedure in which an agar plate is substituted for a tube. All beta-lactamase results obtained by this modified technique correlated with minimal inhibitory concentrations determined in liquid media and the chromogenic cephalosporin substrate method. This modified acidometric agar procedure is a simple, inexpensive, accurate, and rapid way to determine H. influenzae susceptibility to ampicillin.

Documentos Relacionados

• Simplified Medium for Ampicillin Susceptibility Testing of Haemophilus influenzae
• Ampicillin killing curve patterns for ampicillin-susceptible nontypeable Haemophilus influenzae strains by the agar dilution plate count method.
• Ampicillin disk diffusion susceptibility testing of Haemophilus influenzae.
• Ampicillin killing curve patterns of Haemophilus influenzae type b isolates by agar dilution plate count method.
• Manner and Meaning of Susceptibility Testing of Ampicillin-Resistant Haemophilus influenzae