People urged to donate bone marrow as tot faces third transplant

Jack Kleinberg has battled against two life-threatening conditions as he suffers from familial mediterranean fever and Wiskott-Aldrich syndrome, which affects one in 10 million children and means he has to live in virtual isolation. His parents, Rob and Vicki, live with the knowledge that any part of his body can stop working at any time from a simple fall or infection.

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