11.   The current vaccine candidates were based on injecting the antigens themselves into the body.

n. + candidate >>共 626
opposition 21.24%
third-party 4.35%
job 3.35%
compromise 3.32%
minority 2.68%
year 2.48%
woman 2.22%
election 1.97%
write-in 1.64%
drug 1.39%
vaccine 0.35%
vaccine + n. >>共 165
trial 6.88%
research 5.89%
development 5.50%
production 4.52%
maker 3.73%
program 3.34%
shortage 2.75%
manufacturer 2.36%
supply 2.16%
candidate 2.16%
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