Police say the woman used a large kitchen knife on her 2-year-old son and then stabbed herself.
"It appears that the mother may have intended to kill the child and kill herself," Lt. Jason Loper, told WGAL news. "But it's still being investigated."
When cops arrived at the home in the upscale neighborhood they found the woman with a wound to her chest and the baby had been stabbed in the neck.
Both were taken by helicopter to the Hershey Medical Center in Pennsylvania. Doctors say the child’s injuries are not life threatening but there was no word on the mother.
Neighbors say the family only has one child, are new to the area and not well known.