(CNN) Two-year-old Zainab Mughal has some of the rarest blood in the world.

She's been battling cancer, and to survive, she's likely to need blood transfusions from seven to 10 donors who haven't all been found.

That's because they're as rare as she is.

Only people of Pakistani, Indian or Iranian descent who have the same type of blood as Zainab, whose family hails from Pakistan, are likely to match with her. Less than 4% of people in those populations may match, according to OneBlood , a South Florida nonprofit organization that's aiding in a global search to identify and recruit donors for the young girl.

"We have a zero percent chance of finding compatible blood for this little girl if we look in pretty much any other ethnic group," Frieda Bright, a lab manager with OneBlood, said in a video provided by the organization. "We are searching the world to try to find blood for this little girl."

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