This may help identify a new high-risk group, she says.
Young adults aged 17 to 20 are also a high-risk group.
Military and other high-risk groups continue to get the vaccine.
Still, she said, many more people should get the shot, especially those in high-risk groups.
"Many high-risk groups are no longer concentrated in the city," he said.
The smart place to battle it is among the high-risk groups.
Generally, their premiums are far lower than those in the high-risk group.
Can a supplement hurt if you are not in one of those "high-risk" groups?
The plan is to provide vaccines only to those in high-risk groups and to medical workers.
When members of high-risk groups are tested, the false positive rate is much lower, but still significant.