many thanks for your prompt reply. I had no idea this would all take place in this format, so it is very pleasing. I am still hesitant, as i have read that ALL of the blisters should be crusted/scabbed over before they are deemed no longer contagious. I understand that its difficult to tell, so i'm not looking for a reply, but I will give your advice much consideration and hopefully I'll only have the Christmas lunch to worry about.
Many thanks and A Very Merry Christmas to you all
i pressed 'Good Service', hope that went through? Sorry, am a bit of a dinosaur with technology!!