BOSTON (CBS) – Brigham and Women’s Hospital said it’s “confident” that a coronavirus cluster of 57 cases that involved 42 employees and 15 patients has been contained.

“We have not had any new potentially contagious cases on the units that were affected since Oct. 3,” the hospital said in a statement.

READ MORE: I-Team: Nora Baston To Be Named New Boston Police Commissioner

The cluster was discovered in late September and was limited to two inpatient units – 16A and 14CD of Braunwald Tower.

READ MORE: Ex-Fall River Mayor Jasiel Correia Found Guilty Of 21 Charges In Corruption Trial

The hospital said its’ own investigation found several possible reasons for the outbreak, including a highly-infectious source patient, inconsistencies in patient masking and eye protection among providers and a lack of physical distancing among staff while eating.

MORE NEWS: Stimulus Check Update: Will You Get A Fourth Relief Payment?

The hospital said it is addressing those issues.