BEIJING, May 28 (Xinhua) -- Health authorities in Beijing Tuesday reported a second human infection of the H7N9 strain of bird flu in the Chinese capital.

A six-year-old boy who lives in the Haidian district was confirmed to have been infected with the H7N9 strain Tuesday afternoon, the Beijing municipal health bureau said in a statement.

The child developed symptoms including fever and headache on May 21 and he was sent to a hospital for medical treatment on the same day. His body temperature returned to normal on May 23 and he returned to kindergarten the next day, according to the statement.

The boy was sent to the Beijing Ditan Hospital for further medical observation after being confirmed of the H7N9 infection Tuesday.

The boy is in good condition and his body temperature has been normal for five straight days, it added.

The H7N9 epidemic has waned this month with only a few cases being confirmed.

With the latest case, the Chinese mainland has reported 131 confirmed H7N9 cases and of them, 37 were killed.