it would be fun to do inter-disciplinary research , most of the times the problems solved in one domain could be used in another domain . The challenge of course is gaining reasonable expertise in non-home domain in order to start seeing patterns in both the domains.  How computer virus spreads or is pretty much similar to how diseases spread or how malware evolves is pretty much similar to genetics and evolution . 

But one should have good understanding in both the domains . and the way it usually works is who would fund ? (very few universities) such research 

1) the main challenges of interdisciplinary research for a computer science expert  is to get a good set of doctors (who will agree to work and share their data and experience) and also to get a good hospital where they allow to carry out experiment with the help of doctors

2) the main challenges of interdisciplinary research for a medical science expert is to get a good set of programmers with ability to learn a new domain

I have worked in the area of health informatics. The issues of such inter-disciplinary area are :

1. Medical practitioners are not willing to accept too much computer science elements .

2. Due to heavy privacy issue with medical data, it is very difficult to carry out research such as medical data analytics.

3. Computer scientists on the other hand (due to lack of domain knowledge) will find miss out a lot on the tacit knowledge that exists in the medical field.