The researchers posted a formal correction to the study on July 29th stating, “There is no strong evidence to suggest these organisms are in fact present, and no evidence of pathogenicity."
But make no mistake, there's plenty of other bacteria hitching a ride on the trains, according to the study, which has not been entirely retracted. The scientists collected over 1,400 samples from 466 stations across the system, identifying over 15,000 life-forms. However, half of the DNA collected didn't match known organisms. Some of them were likely B&Ters from Jersey. The rest were probably from Staten Island.