The Ivy League school has begun vaccinating nearly 6,000 students to try to stop an outbreak of type B meningitis in an unusual federal government-endorsed administration of a drug not generally approved for use in the U.S. Mel Evans/AP hide caption

itoggle caption Mel Evans/AP

Administrators at University of California, Santa Barbara are encouraging fraternities and sororities to hold off on parties. Damian Gadal/Flickr hide caption

itoggle caption Damian Gadal/Flickr

Six students and a visitor have fallen ill with meningitis at Princeton University in New Jersey, shown here in August 2013. All have recovered or are recovering, officials said. Bloomberg via Getty Images hide caption

itoggle caption Bloomberg via Getty Images

Spinal MRIs similar to these found infections that many patients hadn't realized they had. Stefano Raffini/iStockphoto.com hide caption

itoggle caption Stefano Raffini/iStockphoto.com

New England Compounding Center co-owner Barry Cadden went to Capitol Hill for a congressional hearing Wednesday on the fungal meningitis outbreak. Choosing to take the Fifth Amendment, Cadden did not testify. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

A Framingham police officer keeps watch as federal agents search the New England Compounding Center company in Framingham, Mass., on October 16. Dominick Reuter/Reuters /Landov hide caption

itoggle caption Dominick Reuter/Reuters /Landov

Matthew Spencer receives intravenous infusions of a potent antifungal drug at home twice a day for an indefinite period to treat a suspected case of fungal infection linked to a contaminated steroid drug that came from New England Compounding Center in Massachusetts. Richard Knox/NPR hide caption

itoggle caption Richard Knox/NPR

Federal agents investigate the offices of the New England Compounding Center in Framingham, Mass., on Tuesday. The company's steroid medication has been linked to a deadly meningitis outbreak. Barry Chin/AP hide caption

itoggle caption Barry Chin/AP