Jonny Terrell was a healthy, happy baby — but a month before his first birthday, he came down with an infection. Days later, he was vomiting. Over the next few weeks, mom Emily Robichau took him to the doctor for ear infections, stomachaches, rashes, vomiting, diarrhea and more.

"The list was so long I couldn't remember it all," Robichau recalled. She had three older children and knew that kids got sick. But she had never seen anything like the constant stream of ailments her 11-month-old was experiencing.

The day after Jonny's first birthday, in August 2024, his stomach swelled, "like watching a balloon fully inflate," Robichau said. The next day was his one-year checkup. Jonny's pediatrician took one look at him and sent them to Massachusetts General Hospital for Children. When Robicha

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