Poland's Health Minister said that he has cancelled the in-vitro contract with a fertility clinic in northwestern Poland where a woman was implanted with a wrong egg.

The blunder apparently made at the Pomerania Medical University clinic in Szczecin became evident when the woman gave birth last year to a baby girl with serious health problems. DNA tests revealed that she is not the biological mother, though her husband is the biological father. The baby remains hospitalized and the family are not commenting the situation.

Health Minister Bartosz Arlukowicz said he has canceled the ministry's contract with the clinic, has imposed a fine of an undisclosed level, and asked prosecutors to investigate.

His action affected only in-vitro fertilization services and not other procedures provided by the gynecology clinic.

Couples in the in-vitro program will be phased to other clinics, Arlukowicz said.

The government co-finances in-vitro procedures to support greater number of births in the aging society.

Gynecologist Stanislaw Radowicki, who headed a control at the clinic, said it was a "technical mistake" that could have resulted from human error.

"We found no errors in the procedures so we concluded that it was human error," Radowicki said, stressing it was an isolated case.

Some 1,200 pregnancies in Poland have resulted from the in-vitro procedure, Radowicki said.

The online edition of local daily, Glos Szczecinski, said the actual procedure was performed at the clinic's laboratory in the town of Police, near Szczecin.