No. If monitoring all MRSA specimens, any MRSA isolate from the same patient and location after an initial report of MRSA during a calendar month is considered a duplicate MRSA isolate and should not be entered, except if it is a unique blood source.  If the first MRSA isolate for the month is from a blood source, no other non-blood MRSA isolates are reported for the calendar month for that patient and location.  If there is another positive MRSA blood isolate from same patient and location, there must be a full 14 days with no positive blood MRSA isolates for the patient and location before another MRSA Blood LabID Event is entered into NHSN for the patient. See Figure 1 in MDRO and CDI Module (Chapter 12) [PDF – 3 MB] for algorithm for ALL SPECIMENS.