Virus?

I seem to have avoided computer viruses since I bought this new laptop. Touch wood. But I haven't avoided the other type. Feeling exhausted at my age  always poses the question, 'Is it age related (like my macular degeneration) or is it a virus?'
Consoling my urge to garden by browsing the catalogues.
Now it is Wednesday which is market day and library afternoon and Breton dancing evening. I can't do all three so I have to choose.
 Tonight there will be a Danish group of dancers and muscians.