5 Things to Know About the Flu Shot

Back-to-school is nearly synonymous with flu season, which means sunburned noses are about to give way to runny noses rubbed raw from one too many tissues.

Fortunately, the 2013-14 flu shot is already available, and this year it's better than ever, covering four strains of the virus instead of the usual three.

"You can see cases as early as October," ABC News chief health and medical editor Dr. Richard Besser said recently on Good Morning America. "So I like to get the vaccine as soon as it's available. I got mine last Friday."

Here's what you need to know about the flu shot to get ready for flu season this year.

The flu vaccine doesn't have to be a shot.

Nowadays, you can get the flu shot without the traditional needle pricking your muscle.

The flu vaccine is available in a nasal spray for people ages 2 years old to 50 years old.

For those who can't get the nasal spray but are still squeamish about needle sticks, there's a micro-needle that delivers the same protection in a shallower shot called an intradermal needle.

Watch Dr. Besser talk about it here.

Pregnant women should definitely get a flu shot.

Pregnant women may have to avoid certain medications, but they can – and should – be sure to get a flu shot because their immune systems are depressed to accommodate the growing fetus, leaving them vulnerable to the flu virus.

Last year, the World Health Organization said pregnant women should be given top priority for flu vaccinations, putting them above the elderly, children and people with chronic health conditions.

Read one woman's story about how not getting the flu shot while pregnant made her so sick, she was hospitalized for three months, put into an induced coma and went into early labor.

It's a good idea to get vaccinated early.

Sure, it still seems like summer, but flu season isn't tied to weather. It's actually tied to the school year, when children are in close quarters and don't always wash their hands.

And, remember, flu season still hits warm states like Mississippi.

Read more about what really triggers the flu season here.

The shot can't give you the flu.

Despite urging from the Centers for Disease Control and Prevention to get vaccinated every year, about half of Americans skip it, many fearing that it will make them sick.

While the flu shot uses parts of a dead flu virus to train your immune system to fight it, it can't make you sick.

The nasal spray vaccine uses a live virus, but it's weakened so it can only multiply in the nose. It shouldn't give you the flu, but some patients get a sore throat for a day.

Click here to read more flu fact and fiction.

Getting the flu once doesn't protect you against getting it again.

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