Dear teachers,
I have some difficulty in distinguishing between 'immune to ' and 'free from'. For example, we can say 'He is immune from colds'. Could you please explain to me if I can say ' He is free from colds'?
Looking forward to hearing from you.
Thank you in advance.
Jiang
"Immune to" literally means that someone is protected from a disease due to innoculation. "The Salk vaccine made a generation of children immune to polio."
It can also be used figuratively; for example, certain ambassadors and dignitaries have "diplomatic immunity," meaning they cannot be prosecuted for certain crimes.
"Free from" is a temporary condition. Just because you were free from colds last year doesn't mean you won't catch one this year."The dentist said I didn't need any fillings - I managed to stay free from tooth decay since my last visit."
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Dear Mike,
Thank you very much for your further explanation. In my dictionary it reads:
the fact of not being affected by adisease or harmed by something unpleasant.
But the first meaning of your explanation is different from that in my dictionay. Could you please kindly further explain it?
Looking forward to hearing from you.
Thank you in advance.
Jiang
There are three main ways to acquire immunity to an infectious disease:
1. borrow immunity from one's mother (passive immunity of newborns)
2. develop immunity after having a disease
3. develp immunity after a vaccination (simulates having the disease)
Your dictionary means that once one is immune, one cannot be infected. One way to develop that immunity to have a disease and recover from it. Then you can't get it again (at least for a while).