As 14 owners or employees of a Massachusetts compounding pharmacy were arrested Wednesday in connection with 2012 tainted drugs that killed 64 people nationwide, the owner of a series of New Hampshire pain clinics that dispensed some of the medicine says they seem to have not been affected.

“We made direct contact by telephone. The overwhelming majority of patients that were exposed have remained patients. We have been able to follow up with them on a very regular basis. … None developed any kind of abscess,” Dr. Michael O’Connell, owner of Pain Care LLC, said of the 215 patients who received injections of tainted steroids produced by New England Compounding Center, a compounding pharmacy in Massachusetts.

More than 750 people in 20 states got sick, and 64 died, after they contracted fungal meningitis and other illnesses from tainted steroids made by New England Compounding Center. The steroids given were for medical purposes, not for body building. Most received the injections for back pain.

Barry Cadden, a co-founder of the New England Compounding Center, and Glenn Adam Chin, a pharmacist who was in charge of the sterile room, were hit with the most serious charges Wednesday, accused in a federal racketeering indictment of causing the deaths of patients in several states by “acting in wanton and willful disregard of the likelihood” that their actions would cause death or great bodily harm. Compounding pharmacies mix specialized medications and supply them directly to hospitals and doctors

Speaking from Pain Care’s headquarters in Somersworth, O’Connell said that follow-ups by Pain Care LLC showed that none of the patients involved with his clinics were among those infected with tainted drugs.

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