§ 363-dd. Impairments of health; presumption. Notwithstanding any provision of this chapter or of any general, special or local law to the contrary, any police officer or firefighter who is covered by the provisions of section three hundred sixty-three of this title and who contracts HIV, tuberculosis or hepatitis after contact with members of the public (where there may have been an exposure to a bodily fluid) will be presumed to have contracted such disease in the performance or discharge of his or her duties as the natural and proximate result of an accident and to be disabled from the performance of his or her duties unless the contrary be proven by competent evidence.