virus strain/nmn

21.   The government is recommending a change in flu vaccines this coming season to fight off different virus strains likely to strike.

n. + strain >>共 172 个
groin 20.22%
muscle 11.65%
thigh 7.54%
hamstring 7.46%
calf 4.54%
flu 3.60%
anthrax 3.08%
side 2.74%
shoulder 2.66%
knee 2.31%
virus 1.80%
virus + n. >>共 211 个
infection 8.62%
writer 7.37%
level 4.23%
checker 3.92%
strain 3.29%
particle 2.51%
outbreak 2.51%
attack 2.35%
expert 2.35%
protection 2.19%
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