The bank said in a statement on Thursday (March 12) that an employee who accompanied his feverish brother to a hospital the day before had himself show symptoms of infection.
The employee informed his supervisor before being admitted and tested for the virus, which confirmed the infection on Thursday morning.
The bank urged all staff members working on the same floor to be tested and, regardless of the result, to work from home for 14 days – the incubation period for the disease.
The entire 26th floor was cleaned and sterilised on Wednesday, it said.