Currently, there are no medications which specifically fight viruses. Since the most damaging viruses are transmitted by the varroa mite, it makes sense to use the alternative Varroa control concept to prevent viral infection. Preventive measures for combating viral diseases can be found in our Guide to Bee Health.
Alternative Varroa Control (PDF, 82 kB, 18.01.2017)
A. Imdorf, J.D. Charrière (2003)