Last week I read in the newspaper that they are starting to give flu shots in my area of central Florida. Isn't it a little early to get a flu shot? Some doctors recommend getting a shot as soon as it's available. I think it's a supply and demand situation. In other words, if the supply is there, they want people to use it. However, in my area, they usually offer flu shots multiple times in different locations, so I don't feel rushed.
I plan to wait until sometime in october. Then I know it will be effective throughout the flu season, even though they claim it will last a long long time.
"Jumping the gun" means: you'll get shot early.