"You have nothing to fear," he said. "Under your beneficent Leaders, infectious disease has been wiped out many years ago. BureauMed informs me that these scattered cases of Blue Martian fever have been caused by the escape of a few Fafli insects, which have, since then, been isolated and destroyed. The illness has no serious after-effects. And as for the rumors that it confers immortality—"
He allowed his face to break into a pitying smile as he slowly shook his head, looking regretful and yet somehow amused.
"Those who continue to spread gossip about the fever will only reveal themselves as either psychotics or traitors. Whichever they are, they will be isolated for the good of our society."
The effect of his words was somewhat diminished by the brief glimpse people had of Dr. Lanza, who reached a hand to help the Leader rise. For Dr. Lanza wore an anxious frown, and his face was thin with worry.
In spite of numerous arrests, the rumors continued. For two weeks sporadic outbreaks of the fever occurred, and then, abruptly, they ceased.
It was more than a week after the last case had been reported that David sat in his basement laboratory beside the opened mouse cage, watching with wry affection as the furry creatures crawled over his hand. These were historic mice, he reflected, whose reactions to SDE had opened up a new world, a world which he must somehow help to make better than the present one.
His three colleagues had returned a few days ago from their holiday. They had calmly come back to work, and apparently nobody had thought to put two and two together, and thus connect the epidemic with the vacationers. It had been unfortunate that Tanya should have been put under arrest; it was difficult trying to find amusement for Leah so that she would keep out of sight, but still, on the whole, their luck had been good.
But it was time for David to go back to work in his office. Gently he detached the mice from his hand, dropped them into their cage, and closed the wire trap. He took his leather pencil case and the keys to his desk from the pocket of his lab coat and laid them on the desk, below the nail on which his wristwatch hung. Carelessly he dropped his lab coat onto the desk and reached for his jacket, then paused, listening.
The chatter in the technicians' room suddenly died. In the unnatural quiet sounded a steady march of feet.