Bacterial Salmonella Typhi strain H58 which has developed antibiotic resistance to older antibiotics is threatening to overrun public health.
New study has found that the genes could induce antibiotic resistance in bacteria elsewhere.
Livestock producers in developing nations routinely use doses of antibiotics to keep disease away, which could allow bacteria develop drug resistance.
The bacteria's leak is still being investigated months after it is believed to have happened.
The infection was caused by equipment used for gastrointestinal procedures.
