Local police Mahesh Srivastava said that the girl told her grandmother that she had been raped by a hospital staff member along with four other women, lying alone in the intensive care unit on Tuesday.
The hospital is located about 250 km from Lucknow, the capital city of Uttar Pradesh.
Srivastava said that the man had been arrested and the police were looking for the other suspects.
The police also asked the hospital to provide material from the security camera and try to determine why the girl was alone in the intensive care unit.
According to the Srivastava police, until the date of the rape, the girl was hospitalized for four days to treat snakebites.
In April, attempting to cool down people's anger over the raping and murder of girls in recent years, the Indian government has ratified the death penalty for people accused of rape on children. 12 years.