BEIJING -- No new cases of human infection with the H7N9 bird flu virus have been reported on the Chinese mainland over the last week, China's health authority said on Monday.

Over the same period between May 13 and Monday afternoon, there was one report of an infection that ended in death, and 15 patients have recovered, according to a statement issued by the National Health and Family Planning Commission.

To date, the Chinese mainland has reported 130 confirmed H7N9 cases, of which 36 cases ended in death, and 72 patients have recovered and been discharged from hospital, the statement said.

It added that there has been no evidence of human-to-human transmission detected so far.

Also on Monday, the commission issued a circular on the technical standards of hospitals' tests for the virus.

The circular called on local governments to form expert teams to provide expertise and training for the medical workers, in order to ensure the reliability of the test results.