Is it malpractice/negligence if a surgeon performs a biopsy with a dog bite on his hand and the surgery results in MRSA and then sepsis?

Question Details: By his own admission, the wound on his hand was a dog bite. My brother has lymphoma and treatment had to be delayed due to MRSA. They wanted him to do the treatment for that at home. Something happened to where he became delirious, very low blood pressure, severe pain in the abdomen obviously because of lymphoma in that area. His oncologist called one day and said to immediately halt MRSA treatment and get to the hospital ASAP. While he was in ICU, the infection advanced to sepsis causing kidney failure and possibly other organs to fail. This is as much as I can provide; this is the extent of my knowledge on the subject.

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