How do you use the adjective immune? This sentence came up in a student’s answer this week.

This does not mean that the German economy is future-proof or immune against a slowdown.

This is a case of using the wrong preposition. The correct phrase in this case is immune from. Some of you may be wondering about the meaning of immune to. You should use immune to when talking about a particular disease. You use immune from when talking about a situation or process. 

The origin of the students mistake comes from confusing immunise (immunize in American English).  and to be immune. In the case of immunise, people or animals are immunised against a disease.