Notwithstanding any provision of the general statutes, if the Governor has declared a public health emergency pursuant to section 19a-131a, the Commissioner of Public Health may authorize any qualified person, including, but not limited to, any person licensed under chapter 379, 384 or 384d, to administer vaccinations, if the commissioner determines that such action is necessary to protect the health, safety and welfare of the public. Such authorization shall be in writing, and shall contain the categories of qualified persons included in the authorization, any additional training required before performance of the vaccination by such persons and the duration of the authorization.