Tests found that the boy died of meningitis and myocarditis, diseases caused by rat-bite fever, which is extremely rare, but can be transmitted by rodent bites, as the name implies.
"It was pretty dominant in the baby's brain," Charlie Hall, Cumberland (Penn.) County Coroner told CBS News.
The baby was rushed to the emergency room Dec. 30 and died in the emergency room two days later. The autopsy report was released Thursday.
"It's bizarre," Hall said. The coroner said he's never seen anything like it.
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