NPR, June 21, 2013
People who think they didn't get sick from a nationwide meningitis outbreak caused by contaminated steroid injections used to treat back pain may want to think again. Doctors at hospitals in Michigan did MRI scans of people who had been given tainted injections but didn't report symptoms of meningitis afterwards. About 20 percent of the 172 people tested had suspicious-looking MRIs, and 17 ended up needing surgery to treat fungal infections in or around the spine. The patients had gotten steroid injections about three months before the MRI, in mid to late 2012.