If you’ve ever had to wait until the morning of your first dose of your flu vaccine to get a shot, you’re not alone.

But that’s about to change, according to a new study.

Researchers at the University of North Carolina found that flu shots could be delivered in less than two weeks from the first dose, and that the shot was nearly 99% effective in preventing the spread of influenza.

While there’s no guarantee you’ll be protected from the flu, getting the flu shot and getting a flu shot in the same day should save you from some serious complications.

If you or anyone you know is allergic to any of the vaccines listed above, consult your doctor or pharmacist to determine if any are the right ones for you.