Resistance by Pattern

Figure 4. 

Figure 4 depicts a line graph visualizing the antibiotic resistance trends from 2012 to 2024 representing the CLSI guidelines for interpreting antimicrobial susceptibility testing results. The greater the number of CLSI classes means that the bacteria causing the infection is highly resistant to the antibiotic. The CLSI class is based on the Minimum Inhibitory Concentration (MIC) with Class 1 being susceptible, Class 2 being intermediate, Class 3 being resistant, and Classes 4-8 being reserved for specific resistance mechanisms and special susceptibility criteria. Although the susceptible class is the highest percentage of testing results at about 32% in 2024, the intermediate and resistance classes are relatively close at 24% and 28%.