The doctor looked up quizzically, "Is that the only reason you think you might need a booster shot?"
"Oh, no ... of course not!" The man leaned forward and placed one hand, palm up, on the desk. "Last year I had an accident ... stupid ... lost a thumb." He shrugged apologetically, "It took almost six months to grow back."
Thoughtfully, the doctor leaned back in his chair, "Hm-m-m ... I see." As the man before him made an involuntary movement toward his pocket, the doctor smiled, "Go on, smoke if you want to." Picking up the chart, he murmured, "Six months ... much too long. Strange we didn't catch that at the time." He read silently for a few moments, then began to fill out a form clipped to the folder. "Well, I think you probably are due for another booster about now. There'll have to be the usual tests. Not that there's much doubt ... we like to be certain."
The middle-aged man seemed relieved. Then, on second thought, he hesitated