For many Americans, it's not clear how easy getting a COVID-19 vaccination this fall will be — or if they've lost the choice. Health Secretary Robert F. Kennedy Jr. this week said the shots are no longer recommended for healthy children and pregnant women, usurping a decision normally made by scientific experts. That follows an earlier Food and Drug Administration move to limit the shots among healthy people under age 65. The biggest questions are whether people can still choose a vaccine even if it's not recommended for them — and if insurance will pay.