§ 207-p. Performance of duty disability retirement; police and fire department. Notwithstanding any other provision of this chapter or administrative code to the contrary, any paid member of a fire department and/or a paid police department, in a city with a population of one million or more who successfully passed a physical examination upon entry into the service of such department who contracts HIV (where the employee may have been exposed to a bodily fluid of a person under his or her care or treatment, or while the employee examined, transported, rescued or otherwise had contact with such person, in the performance of his or her duties), tuberculosis or hepatitis, will be presumed to have contracted such disease as a natural or proximate result of an accidental injury received in the performance and discharge of his or her duties and not as a result of his or her willful negligence, unless the contrary be provided by competent evidence.