Learned something in process and that is what Axel said (Axel Foley / really? Wasn’t he a character in a very wonderful and funny movie starring a former SNL cast member?) and that is that Apple products CANNOT have Computer viruses - as I understand them to be in the PC world (I.e. self replicating and otherwise destructive) UNLESS that Apple Product has been “jail broken” which is something that most Apple product owners don’t want to do anyway! So a “calendar virus” on the Apple Calendar is nothing more than annoying sucker bait which I must have fallen for somewhere along the line. Annoying but harmless unless you respond to it.
That said, it appears that you actually CAN respond inadvertently if you delete the “event” which appears to be posted on “the calendar” - what you have to do is delete the calendar itself - which is actually THEIR calendar and not one you created at all!
one other step - something I know I am supposed to do but cannot remember HOW to do at this point (sorry my iPhone skills - not to mention my memory - are lacking) is NOT accept calendars at all from “others” to be included in with your “master” calendar.
I know that explanation is a little murky. Perhaps someone can explain that better than I did in my feeble attempt!
anyway - thank you again - “Axel” and everyone else!