Our family knows MRSA all to well. My MIL almost died from it. She is on a long road to recovery. Thankfully, she is off the ventilator. She is now at a step down rehab/nursing home facility.
Her last testing showed the MRSA "under control" and finally the right antibotic was taking effect.
MRSA is NOTHING to take lightly.
Will pray that your brother has a full recovery.