Antimicrobial susceptibility testing(AST) is a laboratory procedure to identify which antimicrobial regimen is specifically effective for individual patients.
The zone of inhibition is a circular area around the spot of the antibiotic in which the bacteria colonies do not grow.
Zone of inhibition can be used to measure the susceptibility of the bacteria towards the antibiotic.
In question
the antibiotic described for the said bacteria for range 13-14 will considered as INTERMEDIATE.
Resistant means the bacteria can grow even if the drug is present.This is a sign of an ineffective antibiotic.
INTERMEDIATE means a higher dose of the antibiotic is needed to prevent the growth.
