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(Reuters) - Facebook Inc Chief Executive Mark Zuckerberg said on Tuesday he and his wife, Priscilla Chan, would donate $25 million to the Centers for Disease Control Foundation to fight Ebola.

"We need to get Ebola under control in the near term so that it doesn't spread further and become a long-term global health crisis that we end up fighting for decades at large scale, like HIV or polio," Zuckerberg said in a Facebook post.

The death toll in the outbreak, first reported in Guinea in March, has reached 4,447 from a total of 8,914 cases, World Health Organization Assistant Director General Bruce Aylward said on Tuesday.

(Reporting by Anya George Tharakan in Bangalore; Editing by Simon Jennings)

• Mark Zuckerberg
• Priscilla Chan
• Facebook