What happened next was utterly impossible.
Thornnastor began to sway alarmingly on its six stubby legs, legs which normally gave the Tralthan species such a stable base that they frequently went to sleep standing up; then it toppled onto its side with a crash that overloaded the sound pickup on Conway’s suit. A few yards away from the treatment table the Melfan Edanelt, who had been assisting Thornnastor, collapsed slowly to the floor, its six multijointed legs becoming progressively more limp until the underside of its exoskeletal body hit the floor with a loud click. The Kelgian theater nurse had also slipped to the floor, the silvery fur on its long, cylindrical body undulating and puckering as if being affected by a tiny whirlwind. A member of the transfer team standing beside Conway dropped loosely to his hands and knees, crawled for a short distance along the floor and then rolled onto his side. Too many e-ts began speaking at once, and Earth-humans trying to outshout them, for Conway’s translator to produce anything intelligible.
“This can’t be happening he began incredulously.
Murchison’s voice sounded in his helmet phones, speaking on the ship frequency. “Three extraterrestrial life-forms and one Earthhuman DBDG, with four radically different metabolisms and inherent species-immunity … it’s quadruply impossible! As far as I see, no indications of the other unprotected life-forms being affected.”
Even when observing the impossible, Murchison remained clinical.
“… But it is happening,” Conway went on. He turned up the volume of his suit external speaker. “This is Senior Physician Conway. Instructions. All transfer team-members, seal your helmets. Team leader, sound the alarm for Contamination One. Everyone else, move away from the patient They were doing so already, Conway could see, with a degree of haste that verged on panic. “Beings already wearing protective suits stand clear, unprotected oxygen-breathers go to the pressure litter and as many as possible seal yourselves inside. Everyone else should use the breathing masks and oxygen supplies for the ward ventilators. We seem to be affected by some kind of airborne infection—”
He broke off as the observation ward’s main screen flicked on to show the features of the irate Chief Psychologist. As O’Mara spoke Conway could hear in the background the repeated long and two short blasts on the emergency siren, which gave added urgency to the words.
“Conway, why the blazes are you reporting lethal contamination down there? Dammit, there can’t be a lethal contamination of air and water unless the place is flooded and you’re all drowning, and I see no evidence of that!”
“Wait,” said Conway. He was kneeling by the fallen transfer team-member, his hand inside the open visor, feeling for a pulse at the temporal artery. He found it, a fast, irregular beat that he did not like at all. Then he sealed the man’s visor quickly and went on speaking to the ward: “Remember to close any breathing orifices not covered by your masks, nostrils, Melfan gills, the Kelgian speaking mouth. And you, the protected Illensan doctor, will you check Thornnastor and the Melfan Edanelt, quickly please. Prilicla, how is the original patient?”
The chlorine-breather waddled rapidly towards the fallen Thornnastor, its transparent suit rustling. “My name is Gilvesh, Conway. But all DBDGs look the same to me, so I suppose I should not feel insulted.”
“Sorry, Gilvesh,” said Conway. The chlorine-breathing Illensans were generally held to be the most visually repulsive species in the Federation as well as the most vain regarding their own physical appearance. “A snap diagnosis, please. There isn’t time for anything else. What happened to it, and what are the immediate physiological effects?”
“Friend Conway,” said Prilicla, still trembling violently, “the DBPK patient is feeling much better. It is radiating confusion and worry, but no fear and minimum physical discomfort. The condition of the other four concerns me deeply, but their emotional radiation is too faint to identify because of the high level of emotion pervading the ward.”
“I understand,” said Conway, who knew that the little empath could never bring itself to criticize, however mildly, another being’s emotional shortcomings. “Attention, everyone. Apart from the four people already affected there is no immediate sign of the condition, infection, whatever it is, spreading. I would say that anyone protected by the pressure litter envelope or breathing through a mask is safe for the time being. And calm yourselves, please. We need Prilicla to help with a quick diagnosis on your colleagues, and it can’t work if the rest of you are emoting all over the place.”
While Conway was still speaking, Prilicla detached itself from the ceiling and fluttered across on its iridescent wings to the heap of silvery fur that was the Kelgian theater nurse. It withdrew its scanner and began a physical examination concurrent with its efforts to detect, isolate and identify the creature’s emotional radiation. It was no longer trembling.
“No response to physical stimuli,” Gilvesh reported from its examination of Thornnastor. “Temperature normal, breathing labored, cardiac action weak and irregular, eyes still react to light, but … This is strange, Conway. Obviously the lungs have been seriously affected, but the mechanism is unclear, and the curtailed supply of oxygen is affecting the heart and brain. I can find no signs of lung-tissue damage of the kind associated with the inhalation of corrosive or highly toxic material, nor anything to suggest that its immune system has been triggered off. There is no muscular tension or resistance; the voluntary muscles appear to be completely relaxed.”
Using his scanner without unsealing the lightweight suit, Conway had examined the team-member’s upper respiratory tract, trachea, lungs and heart with exactly similar results. But before he could say anything, Prilicla joined in: “My patient displays similar symptoms, friend Conway,” it said. “Shallow and irregular respiration, cardiac condition close to fibrillation, deepening unconsciousness and all the physical and emotional signs of asphyxiation. Shall I check Edanelt?”
“I’ll do that,” said Gilvesh quickly. “Prilicla, move clear lest I walk on you. Conway, in my opinion they require intensive-care therapy as soon as possible, and a breathing assist at once.”
“I agree, friend Gilvesh,” the empath said as it fluttered up to the ceiling again. “The condition of all four beings is extremely grave.
“Right,” Conway agreed briskly. “Team Leader! Move your man, the DBLF and the ELNT clear and as far from the patient as possible, but close to an oxygen supply outlet. Doctor Gilvesh will supervise fitting the proper breathing masks, but keep your team-member sealed up, with his suit air supply at fifty percent oxygen. Regarding Thornnastor, you’ll need the rest of your team to move- “Or an anti-gravity sled,” the Team Leader broke in. “There’s
one on the next level.”
“—it even a few yards,” Conway went on. “Considering its worsening condition, it would be better to rig an extension to an oxygen line and assist Thornnastor’s breathing where it is lying. And, Team Leader, do not leave the ward for a sled or anything else until we know exactly what it is that is loose in here. That goes for everyone … Excuse me.
O’Mara was refusing to remain silent any longer. “So there is something loose in there, Doctor?” said the Chief Psychologist harshly. “Something much worse, seemingly, than a simple case of atmospheric contamination from an adjacent ward? Have you finally discovered the exception that proves the rule, a bug that attacks across the species’ lines?”
“I know Earth-human pathogens cannot affect e-ts, and vice versa,” Conway said impatiently, turning to the ward screen to face O’Mara. “It is supposed to be impossible, but the impossible seems to be happening, and we need help to—”