Only five companies produce vaccines today, compared with 25 three decades ago.
But for now, he said, "it is much too soon to say whether our method will produce effective human vaccines."
The government is making plans to produce enough new vaccine to immunize all Americans.
But it also underscores the problem the government has had in producing enough vaccine for the entire military.
"But it is, I believe, a signal at least to produce vaccine to hold in readiness."
After a number of legal hurdles, the company finally received permission to produce vaccines.
Yet the entire vaccine industry now produces vaccines for only about 20 diseases.
Every day produces a new anesthetic or vaccine from which this average man benefits.
Funding supports research to produce vaccine and extend its supply.
The agency said $9 million was needed within two weeks to produce enough vaccine before the onset of the meningitis season.