Tokyo police officers and hospital workers contracted tuberculosis after coming into contact with a male detainee who died from the disease in February 2015, though the case was not reported to health authorities until January of this year, police sources said.

Nineteen police officers at Shibuya Police Station and seven hospital workers contracted the disease, the sources said Monday.

Of them, six people have developed symptoms of the disease and are taking medication. Another six are taking medication, though they have not exhibited symptoms. So far, the disease has not spread to other detainees or to the public, the sources said.