Aspirus Women's Health in Wausau collected 700 pounds of excess breast milk to ship to a certified milk bank in Indiana on Tuesday.
"We screen the donations and then when it gets to the milk bank they pasteurize it and it is tested for bacteria and viruses before it is shipped to neonatal intensive care units to health premature babies, " said Chris Hanke of Aspirus.
A new study by the Journal of Pediatrics highlights the need for knowing where breast milk donations come from.
The report raised concerns about parents buying breast milk online which might not undergo certification.
It showed that many of the donations contained bacteria which could make babies sick.
For more information on certified milk banks in the United States and Canada you can check out this link.