NEW : 14 to 22 vials of The Arkansas Department of Health appeared to have been tampered with , regulatory group says . NEW : He said he could not confirm what infectious diseases may be involved , and it is not clear whether Stewart had any diseases . Dentist had been through drug rehab , group 's attorney says . Oklahoma health officials say a dentist may have given patients contaminated drugs . The first lawsuit against an Arkansas dentist whose patients may have been exposed to HIV is filed .
NEW : 14 to 22 vials of The Arkansas Department of Health appeared to have been tampered with , regulatory group says . NEW : Dentist had been through drug rehab , group 's attorney says . Oklahoma health officials say a dentist may have given patients contaminated drugs . The first lawsuit against an Arkansas dentist whose patients may have been exposed to HIV is filed .