Which of the following are proper techniques when preparing a vaccine?

Selecting the choice indicating that all options are effective techniques when preparing a vaccine is accurate because each listed item contributes to a safe and effective vaccination process.

Swabbing the vial is essential for minimizing any risk of contamination; using a sweeping motion helps ensure that the entire top of the vial is disinfected, as areas missed may lead to infection when the needle penetrates the rubber stopper.

Checking and documenting the expiration date and lot number is crucial for patient safety. Using expired vaccines could lead to ineffective immunization. The lot number is also important for tracking any recalled doses or adverse events associated with specific batches.

Tapping the syringe to remove air bubbles is a standard practice in vaccine preparation. Air bubbles can affect the exact dose administered and could potentially cause discomfort or complications for the patient.

Combined, these practices ensure a safe, effective, and professional approach to immunization, highlighting the importance of thorough preparation in vaccination techniques.