The former head of a Massachusetts pharmacy was acquitted Wednesday of murder allegations but convicted of racketeering and other crimes in a meningitis outbreak that was traced to fungus-contaminated drugs and killed 64 people across the country.

Prosecutors said Barry Cadden, 50, ran the business in an "extraordinarily dangerous" way by disregarding regulations on cleanliness to boost production and make more money.

Cadden, president and co-founder of the now-closed New England Compounding Center in Framingham, was charged with 25 counts of second-degree murder, conspiracy and other offenses under federal racketeering law.

After five days of deliberations, the jury refused to hold Cadden responsible for the deaths and cleared him on the murder counts. He was found guilty of racketeering, conspiracy and fraud.

Cadden did not speak to reporters as he left Boston federal court Wednesday.

His attorney, Bruce Singal, said his client's thoughts remain with the victims of what he described as a terrible public health tragedy.

"It was a death case, as we said, but not a murder case," Singal said. "And Barry is very conscious in the flurry of excitement over the verdict that we not forget the people who have suffered terribly during this ordeal, the people who have lost loved ones. And Barry's thoughts and prayers remain with them throughout."

The 2012 outbreak of fungal meningitis and other infections in 20 states was traced by the Centers for Disease Control and Prevention to contaminated injections of medical steroids, given mostly to people with back pain. In addition to those killed, nearly 700 people fell ill. Indiana, Michigan and Tennessee were hit hardest.

Joan Peay, 76, of Nashville, Tennessee, who suffered two bouts of meningitis after receiving a shot for back pain, wept upon learning Cadden was acquitted of the murder allegations.

"He killed people and he's getting away with murder. I am furious," she said. She said that she got so sick from meningitis "I didn't care if I died," and that she still suffers from hearing loss, memory problems, a stiff neck and low energy.

Alfred Rye, 77, of Maybee, Michigan, said after the verdict: "I wish I could give him the same shot he gave me. I think they should pay for their crime."

Rye fell ill after getting an injection in his lower back 4.5 years ago. He said he continues to suffer from a loss of balance and other ill effects.

"Life has been totally hell," he said.

Cadden could get a long prison term at sentencing June 21, though prosecutors would not immediately say what they will ask for. The racketeering charge and the 52 counts of fraud carry up to 20 years each, but federal sentencing guidelines typically call for far less than the maximum.

The scandal threw a spotlight on compounding pharmacies, which differ from ordinary drugstores in that they custom-mix medications and supply them directly to hospitals and doctors. In 2013, in reaction to the outbreak, Congress increased federal oversight of such pharmacies.

Federal prosecutor Amanda Strachan told the jury during the two-month trial that the deaths and illnesses happened because Cadden "decided to put profits before patients."

NECC, among other things, used expired ingredients and falsified logs to make it look as if the so-called clean rooms had been disinfected, prosecutors said. After the outbreak, regulators found multiple potential sources of contamination, including standing water and mold and bacteria in the air and on workers' gloved fingertips.

Cadden's lawyers said he was not responsible for the deaths. They said Glenn Chin, a supervisory pharmacist, ran the clean rooms where drugs were made. Chin has pleaded not guilty.

"As horrible as each of these stories is, there is nothing that shows that Mr. Cadden did something that the government can link to the death of that person," attorney Singal told the jury.

NECC filed for bankruptcy after getting hit with hundreds of lawsuits. NECC and several related companies reached a $200 million settlement with victims and their families.

WBUR's Steve Brown, and Associated Press writers Chris Ehrmann in Lansing, Michigan, and Sheila Burke in Nashville, Tennessee, contributed to this report.