Thanks for the link Scubaman. I'm going to get a protective cover or sleeve for my card this weekend. My wife gets her second Pfizer dose on Friday and my youngest son has 'sternly' warned her by saying "mom, you won't have total immunity until you reach 13 to 15 days post second inoculation so play it smart for another two weeks. You can still contract the virus." The message is quite clear and that's don't plan your next trip the day after you receive your second shot. Just give it a little more time. And, the vaccines (especially those based on mRNA technology) will handle the variants quite well. He has assured us of that so I'm willing to take his word for it.