Mark Zuckerberg, chief executive officer and founder of Facebook Inc., walks with his wife Priscilla Chan while arriving for a morning session during the Allen & Co. Media and Technology Conference in Sun Valley, Idaho, U.S., on Thursday, July 11, 2013. Executives from media, finance and politics mingle at the mountain resort between presentations on business trends and social issues, brought together by New York investment banker Herb Allen. Photographer: Daniel Acker/Bloomberg via Getty Images

Facebook founder Mark Zuckerberg and his wife Priscilla Chan announced on Tuesday that they are donating $25 million to the Centers for Disease Control Foundation to fight Ebola.

Zuckerberg revealed the donation in a post on Facebook (of course), the site that has made him into the $33 billion man he is today.

In a status update, Zuckerberg compared the disease to Polio and HIV, noting that 8,400 people have already been infected by Ebola and that it has the potential to spread quickly. Here's his full update:

There is no cure for Ebola yet, but the chairman for the CDC said earlier this month that he is "confident" the United States will not experience an Ebola outbreak.

Fellow tech billionaire Bill Gates announced last month that his foundation would give $50 million to fight Ebola, the largest donation that the Bill and Melinda Gates Foundation has ever made to a humanitarian cause.