A doctor's office has run out of the latest flu vaccine,but many patients are asking for it.One of the nurses finds some vials from last year's batch in a refrigerator.Should they be used?
A)Yes,because the preservatives and refrigeration ensure that the vaccine is still fresh.
B)No,because each year the technology to make a good vaccine improves.
C)No,because each year the vaccine is made against different subtypes of the flu virus.
D)Maybe - the vaccine should be mixed in a test tube with the virus to see if it still inactivates it.

Question

Quizplus · Accepted Answer

Each year the flu vaccine is made against different subtypes of the flu virus. Using last year's batch may not provide protection against this year's strains. It is important to use the current year's vaccine to ensure maximum protection against the most current strains of the flu virus.

A Doctor's Office Has Run Out of the Latest Flu