These drugs are also effective as preventives for high-risk people in settings like nursing homes.

"It will keep some high-risk people from exposing other people."

But in Minnesota, officials said, more high-risk people are passing on the shots than in years past.

There are just a lot of high-risk people there.

If you screened all the high-risk people in one year, you'd save $1.5 billion, and that would more than cover the cost of screening.

But until then, the only coverage she can find is a plan the State of Iowa offers high-risk people.

"We do a lot of business among some high-risk people."

One study found that 0.4% of patients with a low-risk profile died after 90 days, whereas in high-risk people it was 21.1%.

Other high-risk people, including those with weakened immune systems and spleen problems, may also need a second dose.

The study suggests that to prevent one case of psychosis, four high-risk young people must be treated.