No protection from the flu with the nasal spray vaccine says CDC, better to go with flu shots:

FluMist, made by MedImmune, uses live but weakened strains of flu virus to stimulate the immune system. It's sprayed up the nose and in some seasons it had been reported to be more effective than some injected vaccines.

"NASAL SPRAY FLU VACCINE ACCOUNTS FOR ABOUT ONE-THIRD OF ALL FLU VACCINES GIVEN TO CHILDREN."

But the Advisory Committee on Immunization Practices reviewed the data from the past few flu seasons and found it didn't work in recent years. In fact, FluMist was only 3 percent effective last flu season, CDC said.

"This 3 percent estimate means no protective benefit could be measured," the CDC said. It says it's not clear why it hasn't worked well.

"In comparison, inactivated influenza vaccine (flu shots) had a vaccine effectiveness estimate of 63 percent against any flu virus among children 2 years through 17 years."

The company's response:

AstraZeneca, which owns MedImmune, said other research contradicts ACIP's and the CDC's findings.

"These findings demonstrate FluMist Quadrivalent was 46-58 percent effective overall against the circulating influenza strains during the 2015-2016 season," the company said in a statement.

(via "FluMist Nose Spray Vaccine Doesn't Work, Experts Say"