In case this may be of use or interest - I found that the auction site Delcampe has a dedicated Virus page that lists various countries together with a brief description of the state of their snail mail and links to their postal authorities sites. I followed along to Royal mail and they have a long list of countries updated every day. Russia is listed as closed for business and Germany listed as #problematical' but Spain seems to be open which surprises me given the news from there. Most of the closed countries seemed to be of the small island type.
If it is anything to go by, my personal experience is that everything seems to be arriving here as usual - even from Germany - except things from USA seem a little slow.