Which of the following activities should only be performed by a patient?

The activity that should only be performed by a patient is deciding whether a patient needs a vaccine. This choice reflects the importance of patient autonomy and individualized healthcare. While healthcare professionals can provide recommendations based on clinical guidelines, individual patients have unique health profiles, personal beliefs, and specific circumstances that influence their healthcare choices. It is essential for patients to engage in discussions with their healthcare providers to make informed decisions about vaccinations tailored to their needs.

The other options involve specific roles and responsibilities that healthcare providers typically fulfill. Documenting vaccines in the electronic record, communicating vaccination information to other healthcare providers, and gathering vaccination history are administrative and clinical functions that require input from trained healthcare personnel, as they depend on professional knowledge and access to medical records.