A 7-year-old San Antonio boy with bone marrow cancer is in desperate need of blood. The problem is, his blood type is extremely rare.

Dev Reddy has been in intensive care for several weeks. He was diagnosed in July with acute childhood leukemia.

What’s making Dev’s battle complicated is that he has a blood type of O-negative, which only about 7 percent of the population have, which is why the South Texas Blood and Tissue Center is holding a two-day blood drive in his honor.

“He can donate to anybody, but he can only receive that specific type of blood, and that’s what makes it even more difficult, is that’s only 7 percent of the population,” said Priya Gupta, a family friend.

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