15 Miss. Code. R. 5-85-3.18.2
A signatory may, in accordance with § 41-57-23(3) and § 93-9-9(4), rescind an Acknowledgement of Paternity affidavit by completing and filing with the office of vital records a Rescission of Acknowledgement of Paternity affidavit. The person signing a rescission affidavit must sign his or her name in the same manner as the signature on the Acknowledgement of Paternity affidavit. The signature must be notarized and the date signed must be within one year of the date of the signature on the Acknowledgement of Paternity filed with the office of vital records. After a rescission has been filed the father's information will be removed and surname of the child will be changed to the legal name of the mother at the time of birth, in accordance with Rule 3.3.4 of this subpart.
15 Miss. Code. R. 5-85-3.18.2