Based on the medical history of the deceased 3-month-old boy, an autopsy performed on the boy would show :
From what's said in the question, it seems like the boy has severe combined immunodeficiency (SCID). SCID is a group of disorders that is caused by mutations in different genes involved in the development and function of immune cells in a body. A baby that suffers from SCID tends to appear healthy at birth but is highly risky to gain severe infections from their surroundings. Any infection that happens to a person with SCID will highly endanger their health and can be fatal.
Learn more about SCID at https://brainly.com/question/15526421
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