CDC Investigation
The CDC conducted a phylogenetic analysis of the DNA sequences of the viral envelope gene. The analysis revealed that the viral sequences from five patients, including Bergalis, were more closely related to the dentist's viral sequences than to those from local controls. Later analyses identified another HIV-positive patient with a viral sequence closely related to Acer's. Independent review of the CDC tests strengthened the case that Bergalis's HIV infection was linked to Acer.
Read more about this topic: Kimberly Bergalis