Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Why do some antimicrobials APPEAR IN THE MIC SUMMARY BUT NOT IN THE SIR SUMMARY?

April 26, 2017antimicrobials appear mic sir summary

0

Posted

Why do some antimicrobials APPEAR IN THE MIC SUMMARY BUT NOT IN THE SIR SUMMARY?

1 Answer

0

Posted

There are two possible reasons for this. One is that there is no breakpoint for the organism/antimicrobial combination, so it is not possible to classify isolates as susceptible/intermediate/resistant. Another is that the combination is excluded: for example, MRSA are considered to be resistant to all beta-lactams, so individual beta-lactams are not included in the SIR tables for S. aureus or MRSA, but are included for MSSA.