vaccine need/nsv

1.   If either explanation is correct, an effective HIV vaccine may need to be given frequently, Fauci said.

2.   The vaccine only needs to be applied once and protects animals throughout their growth, the company said.

3.   Vaccines need to be cheap.

4.   What is clear is that the vaccine needs to be improved.

5.   Arthur said the vaccine may need changing, but that it is impossible to tell yet.

6.   To be effective, polio vaccine needs to reach all the children on the same day, then be repeated a few weeks later.

7.   To be effective, polio vaccine needs to reach all the children in any given community on the same day, then be repeated a few weeks later.

n. + need >>共 1173 个
company 3.39%
team 2.69%
people 2.61%
country 2.52%
government 2.44%
child 1.51%
investor 1.17%
system 0.93%
patient 0.91%
woman 0.86%
vaccine 0.03%
vaccine + v. >>共 159 个
be 41.06%
work 4.50%
cause 3.91%
protect 3.32%
have 2.93%
exist 2.64%
prevent 2.15%
use 2.15%
make 1.66%
contain 1.27%
need 0.68%
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