canada and around the world, i'm kim brunhuber. this is "cnn newsroom." we're getting a better idea of just how many americans could soon be eligible for vaccine boosters. an advisory panel to the food and drug administration has recommended pfizer's booster shot only be given to people 65 years and older and those of high risk of severe disease. some see the vote as a setback for the biden administration. it's been making plans to make sure supplies were in place for boosters to be administered beginning monday, while the final decision awaits approval from health regulators, the white house says the decision is an important step forward. cnn's dr. sanjay gupta explains why the committee made its recommendations and what it