21.   Root said the only other plant in the world that produced anthrax vaccine was in Britain.

22.   Talks are under way for Dynport to produce vaccine for civilian use as well, but nothing to date has been worked out.

23.   The companies would not discuss the financial details of producing the vaccine, but Fauci said he believes their goal is to break even, not make a profit.

24.   The Centers for Disease Contol and Prevention, meanwhile, has awarded a contract to Oravax, a company in Cambridge, Mass., to produce smallpox vaccine.

25.   The experimental vaccine was produced and frozen, Mr. Fair said, but his father never did get to use it.

26.   The drug companies say they need such protection to allow them to share information with the federal government and plot a strategy to produce vaccines against agents of bioterrorism.

27.   The number of companies producing the vaccines also has dropped, from four to three.

28.   The science of producing the vaccine is inexact, and this year the makers were caught shorthanded.

29.   The three other companies that produce the vaccine also are experiencing delays.

30.   The vaccine is produced after health researchers decide which of the influenza viruses are most likely to cause the flu that year.