"There are different customers negotiating different prices right now, which is why it's a little bit complicated," Hoge said ahead of a Congressional hearing run by Democratic U.S. Senator Bernie Sanders on Moderna's pricing plans.

Moderna previously said it was considering pricing its COVID vaccine in a range of $110 to $130 per dose in the United States, similar to the range Pfizer Inc said in October it was considering for its rival COVID shots sold in partnership with BioNTech.

Hoge said the government's Medicare health plan for seniors pays $70 per dose for the seasonal influenza vaccine. That there were two to three times more hospitalizations and deaths from COVID in the past three months alone than from the flu went into the company's pricing reasoning, Hoge said.

The Biden Administration has said the pandemic public health emergency will end in May, shifting price negotiations to insurers and other purchasers instead of just the federal government.

(Reporting by Patrick Wingrove; Editing by Caroline Humer and Bill Berkrot)

By Patrick Wingrove