https://www.cdc.gov/flu/pandemic-resources/basics/about.html
Pandemic Flu: Although the US government maintains a limited stockpile of pandemic vaccine, vaccine may not be available in the early stages of a pandemic
Two doses of vaccine may be needed
Will antivirals be available?
Seasonal Flu: Adequate supplies of antivirals are usually available
Pandemic Flu: Antiviral supply may not be adequate to meet demand
Is this classified information which someone at CDC inadvertently leaked into the article?