The federal government may end up discarding unused doses of swine flu vaccine, the director of the U.S. Centers for Disease Control and Prevention said Tuesday.
That's because by the time they produce all they need -- it may be too late.
Meantime, Americans continue to wait in long lines for the vaccine. Health officials now say more than 22 million doses of the H1N1 vaccine are now available and most Americans should soon find it easier to get it.
"We're beginning to get to significant increases in the availability," said Dr. Thomas Frieden, director of the U.S. Centers for Disease Control and Prevention, at a briefing.
Last week, there were just 14 million doses on hand, despite initial predictions that as many as 120 million would be ready by mid-October.
The government expects to have as many as 225 million doses of the new vaccine if needed.
CDC officials estimate that at least 1,000 Americans have died from the virus since April.