The origin of the strange bacterium that affected nearly 70 people in 16 states sparked an investigation that lasted for months. Dr.
Morgan Morelli, an infectious disease physician, didn't understand how the unusual bacteria had infected and blinded Nancy Montz's left eye. Montz, 72, of Perry, Ohio, had been infected with Pseudomonas aeruginosa, a bacterium resistant to most antibiotics. The bacteria was also in the bottle of EzriCare artificial tears he had ordered through Amazon.