The nasal spray option could encourage more people who have fears of doctors or needles to inoculate themselves against the flu.

"For those interested in self or caregiver administration, the vaccine manufacturer plans to make the vaccine available through a third-party online pharmacy," the FDA said. "Those who choose this option will complete a screening and eligibility assessment when they order FluMist.

The Food and Drug Administration on Friday approved the first at-home flu vaccine, a nasal spray that consumers with a prescription will be able to order online starting next year. Health experts say the convenience of the spray — FluMist — could lead to increased flu vaccination rates.