Question

You've rehydrated a vaccine and drawn it into the syringe when you're interrupted by an emergency. when you return to the vaccine 45 minutes later, you should

Answer 1

The syringe should be thrown away immediately. It does not take long for bacteria to infect the syringe. The vaccine may still be good, but it's not worth the risk of infection. As a general rule, all vaccines should be used right away once they have been rehydrated and drawn into a syringe.