On and after October 1, 2007, a nurse who is employed by an agency licensed by the Department of Public Health as a home health care agency or a homemaker-home health aide agency may administer influenza and pneumococcal polysaccharide vaccines to persons in their homes, after an assessment for contraindications, without a physician’s order in accordance with a physician-approved agency policy that includes an anaphylaxis protocol. In the event of an adverse reaction to the vaccine, such nurse may also administer epinephrine or other anaphylaxis medication without a physician’s order in accordance with the physician-approved agency policy. For purposes of this section, “nurse” means an advanced practice registered nurse, registered nurse or practical nurse licensed under chapter 378.