They said last night that the new cases involved health care workers and hospital patients, along with some family members.
Health Department officials said there were no plans to include general hospital patients.
It was the first time in his 75 years that he had ever been a hospital patient.
Another study of hospital patients in the same period found an increase to 18 percent, from zero.
Providing food for hospital patients is seen as an easy area to save money in.
However, this is not only of significance to health workers but also to hospital patients and their families.
Those companies might decide to send their hospital patients elsewhere.
In the last two years, you have worked with hospital patients under the supervision of senior doctors.
Hospital patients usually receive blood tests to monitor these levels.