Miss. Code Ann. § 69-13-13

If any county in the State of Mississippi by vote comes from under the provisions of the present state-wide stock law, and said county thereafter becomes tick infested, all expenditures in connection with the tick eradication in said county or tick infested area or areas, must be paid from the funds of said county, except the salary and expenses of the state officers and agents. Furthermore, any county that comes from under the state-wide stock law under the provisions of Sections 69-13-1 through 69-13-27 and becomes infested with the Texas fever tick, the same shall, on complaint of the board of animal health, go back under the provisions of the state-wide stock law.