Simple screening method for beta-lactamase-positive and -negative ampicillin-resistant Haemophilus influenzae isolates.
AUTOR(ES)
Parr, T R
RESUMO
A simple, inexpensive method for screening for beta-lactamase-positive and beta-lactamase-negative ampicillin-resistant Haemophilus influenzae isolates was developed. Disks containing 10 micrograms of cloxacillin yielded no zone of inhibition when placed on chocolate agar plates inoculated with beta-lactamase-positive (16 strains) or ampicillin-resistant (greater than or equal to 1 microgram/ml) beta-lactamase-negative (10 strains) H. influenzae, whereas ampicillin-susceptible (less than or equal to 0.5 microgram/ml; 36 strains) H. influenzae almost always (92%) showed a zone of inhibition.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=271264Documentos Relacionados
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