The month-old boy, christened Tiger by the couple who found him in a nullah in Ambernath in December, underwent tests for a brain infection on Wednesday. Though his vitals are stable and he is conscious, the liquid accumulated inside his brain was removed on Wednesday and sent for testing. After studying the reports of the tests, the neurosurgeon will decide whether or not Tiger should undergo surgery.

Hours-old Tiger was found by a couple from Ulhasnagar on December 30 last year in a nullah in Ambernath stuffed inside a polythene bag. Social activists Shivaji Ragade and his wife, Jayashree, took the newborn to Central Hospital, Ulhasnagar, first and to a private hospital Sai Ashish where he was treated for infection. But, last week after he was found to have an infection in his brain, he was rushed to Bai Jerbai Wadia Hospital, Parel.