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1.symptom(n.):a change in the body caused by disease
ex :The symptoms of influenza include a headache and sometimes a runny nose.
2.pregnant(a.): rich in significance or implication
ex :She got pregnant soon after her marriage.
3.contagious(a.): communicable by contact
ex :It's a highly contagious virus.
4.vaccination(n.): the scar left by vaccinating
ex :Some diseases can be prevented by vaccination.
5.inject(v.): to introduce into something forcefully
ex :She told a few jokes to inject a little humor into her speech.
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