As used in this section, "alien" means an individual who is not a citizen of the United States.
Any person that employs an alien who is not legally present in the United States and has a contagious or infectious disease contracted before or during employment shall pay to the municipal corporation, township, or county in which the alien is employed any expense caused by the contagious or infectious disease. An employer is not subject to this section if the employer demonstrates that the alien was employed in compliance with the requirements of section 101(a) of the "Immigration Reform and Control Act of 1986," 100 Stat. 3360, 8 U.S.C.A. 1324a, as amended, unless there is evidence that the employer complied with the act knowing that the alien is not legally present in the United States.