Which of the following is a requirement for vaccines to be administered?

Vaccines must be FDA authorized or licensed to be administered. This requirement is crucial because it ensures that the vaccines have undergone rigorous testing for safety, efficacy, and quality before they are made available for public use. The Food and Drug Administration (FDA) is responsible for evaluating the clinical trials and data submitted by vaccine manufacturers to confirm that their vaccines meet the stringent standards necessary to protect public health.

Vaccines that are not FDA authorized or licensed lack the necessary validation and oversight, which could potentially lead to the administration of ineffective or unsafe products. Therefore, proper authorization from the FDA is a fundamental prerequisite in the vaccination process to ensure patient safety and compliance with public health regulations.