GAITHERSBURG, Maryland (Reuters) - The U.S. government has bought 195 million doses of H1N1 swine flu vaccine for a possible autumn vaccination campaign, a U.S. federal official said on Thursday.

The U.S. Health and Human Services department has also contracted for 120 million doses of adjuvant, a compound to stretch the number of doses of vaccine needed, HHS’s Dr. Robin Robinson told a meeting of Food and Drug Administration advisers.