Very few people will have any immunity to this particular combination, which is what gives the concern that this will be a pandemic rather than just a normal seasonal flu outbreak.
The current outbreak seems to be entering this stage, though not necessarily because we have all developed immunity.
现在的流感爆发像是进入了这一阶段，不过并不一定是因为我们都有这种免疫力。
To protect you against small pox or diphtheria, you are vaccinated with a small amount of the toxin, and then your body develops immunity against that toxin.
为了避免你长小脓包或得白喉病，所以会给你的身体接种小量毒素，然后你的身体会针对这些毒素产生免疫力。
But a new study shows that people with true expertise in a subject have some immunity to the siren song of corporate sponsorship.
一项新的研究发现，在某一方面有真才实学的人们对广告赞助商的“糖衣炮弹”有一定的免疫力。
Vaccination can provide immunity against some diseases.
