Homeland security chief says H1N1 swine flu will most likely flare up this fall
Homeland Security Secretary Janet Napolitano says the H1N1 swine flu will most likely flare up again this fall before a vaccine can be made available.
She told USA Today there probably won't be enough vaccine for everyone, at least in the early part of the flu season, and priorities will have to be made.
The first batches of vaccine are expected in mid-October.
Napolitano says this year's flu season will probably be severe, but not as severe as the pandemic of 1918.
That's when the flu killed at least 675,000 Americans.
She said the outbreak would probably be similar to what happened in 1957, when the flu killed 70,000 Americans and up to 2 million people throughout the world.
Experts have warned for months that swine flu would probably return once kids get back in school.
Wisconsin has reported the most cases of any state. Six people in the state have died from the virus.