Legally, the government cannot give out vaccines with no questions asked, no ID. Every asset the government distributes must be accountable. We must keep a immunization record (usually in the patient's possession) of who and when, along with records on the health care provider's end for compliance.

Say someone experiences an adverse reaction to a vaccine (which does happen) and wants to sue the hospital; no questions asked means that the medical provider did not do a proper assessment of the patient, leaving that professional legally liable to damages.