Possible plant virus on jostaberry

Possible plant virus on jostaberry

Observation - Possible plant virus on jostaberry - UK and Ireland. Description: Jostaberry (hybrid of gooseberry and blackcurrant) has thread-like traces on some leaves. Is it a virus, and if so, should I destroy the plant? I can't find any info about it in our fruit books.

Jostaberry (hybrid of gooseberry and blackcurrant) has thread-like traces on some leaves. Is it a virus, and if so, should I destroy the plant? I can't find any info about it in our fruit books.