She then said, "Did you know you're CMV negative?" Turns out that's a good thing -- it means I haven't been exposed to an extremely common virus, and because of that my blood can be given to premature babies and people with leukemia and the otherwise immuno-suppressed. I had never heard of this before. I don't quite see why it's made such a big deal of at that link I provided -- after all, if you've got a 50/50 chance of being negative, half of all blood donors are probably negative (if it's a virus that's easily transmitted and most people never know they were infected, I can't really imagine the negative status being due to anything other than random chance, so there's no reason to believe that donors are any more or less likely to be infected than the general population). Nobody ever offered me a little pin (though with my general what-is-that-alien-creature attitude toward children, it's entirely reasonable to conclude that I wouldn't want one anyway -- besides, doesn't it look like they're planning to SUCK THE BLOOD out of that infant? Maybe I do want a pin).
Anyway, my blood type (A+) isn't uncommon, but I guess this CMV thing makes me an extra-desirable donor. Well, I was overdue to donate anyway -- I've been trying to do so regularly. Perhaps this will encourage me to make more of an effort. So, much as I tend to resent these little phone calls, I have to say this one probably did them some good.