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A survey from the RAND Corporation published Wednesday noted that adults began getting seasonal flu protection earlier this year than in the past two years that the institution has conducted such a survey.

It is a midseason report only, RAND economist Katherine Harris, the lead author, told The Washington Times. A final one is done at season’s end.

She said this “probably” was because of advice from the CDC, which urged providers to order vaccine early and give it at once.

However, the study also found that while vaccination rates were much higher in September than the same month in 2008, by mid-November, the early spike in vaccinations had worn down and were now about the same for both years. The study showed that 32 percent of adults had vaccinated for seasonal flu by mid-November, compared with 30 percent by then in 2008.

“Given all the attention, we thought the uptake would be higher. We were really interested to see if all the attention [to flu] would increase vaccination rates. We see that it did for a limited period,” she said.