State health officials now say genetic testing from some former patients of Dr. W Scott Harrington are inconclusive and it's not clear if they got HIV from his dental surgical practice in Tulsa and Owasso.
In a news release from the Oklahoma Department of Health, the Centers for Disease Control and Prevention (CDC) used samples from three of four of Harrington's patients who had the disease. At this point, the CDC can't say if the patients got HIV from his practice or if they already had it.
Last month, tests did confirm a patient-to-patient transmission of hepatitis C had occurred in the practice. That's the first such case ever in the United States.
In total, the Oklahoma Public Health Laboratory completed testing for 4,208 persons. Ninety patients tested positive for hepatitis C, 6 for hepatitis B, and 4 for HIV.