Practi-Influenza Vaccine (5mL Vial) Distilled WaterPracti Influenza 5 mL Vaccine vial for clinical training. Designed to simulate influenza prophylaxis for active immunization against influenza disease caused by influenza virus subtypes A and types B contained in the vaccine Simulate either single or multiple dosage vials and provide your students with many opportunities to practice with small caliber syringes. Once your students master the skills of small vial handling, all vial handling will "feel"