"T. gondii" was first described as a human pathogen in 1939 at Babies Hospital in New York City. Wolf, Cowen and Paige identified "T. gondii" infection in an infant girl delivered full-term by Caesarean section. The infant developed seizures and had chorioretinitis in both eyes at three days. The infant then developed encephalomyelitis and died at one month of age. Wolf, Cowen and Paige isolated "T. gondii" from brain tissue lesions. Intracranial injection of brain and spinal cord samples into mice, rabbits and rats produced encephalitis in the animals. Wolf, Cowen and Page reviewed additional cases and concluded that "T. gondii" produced recognizable symptoms and could be transmitted from mother to child.