<h3>Susceptibility</h3>
<p>Doc could feel the tension in the village where GHQ
was temporarily located long before they were close
enough for details to register. The people were gathered
in clusters, staring at the sky where the station
must be. A few were pacing up and down, gesticulating
with tight sweeps of their arms.</p>
<p>One woman suddenly went into even more violent
action. She leaped into the air and then took off at a
rapid trot, then a run. Her hands were tearing at her
clothes and her mouth seemed to be working violently.
She was halfway to the top of the nearest dune before
a rifle cracked. She dropped, to twitch once and lie
still.</p>
<p>Almost with her death, another figure leaped from
one of the houses, his face bare of the necessary aspirator.
He took off at a violent run, but he was falling
from lack of air before the bullet ended his struggles.</p>
<p>The people suddenly began to move apart, as if trying
to get away from each other. For weeks they had
faced the horror with courage; now it was finally too
much for them.</p>
<p>Tension mounted as no news came from the cities.
Doc noticed that it seemed to aggravate or speed up
the disease. He saw three men shot in the next half-hour.<span class="pagenum"><SPAN name="Page_99" id="Page_99">[Pg 99]</SPAN></span></p>
<p>He was trying to calm them with word of a possible
cure for the plague, but their reactions were as curiously
dull as those of Jake had been. As he spoke, they
faced him with set expressions. At his mention of the
need for the blood of young children, they turned from
him, sullenly silent.</p>
<p>Jake came over, nodding unhappily. "It's what I was
afraid might happen, Doc. George Lynn! Tell Doc
what's wrong."</p>
<p>Lynn was reluctant, but he finally stumbled out his
explanation. "It ain't like you, Doc. Comes from that
Lobby woman you got. It's her dirty idea. We've seen
the Lobby doctors cutting open our kids, poisoning
their blood, and bleeding them dry. That ain't gonna
happen again, Doc. You tell her it ain't!"</p>
<p>Doc swore as he realized their ignorance. An unexplained
vaccination looked like poisoning of the blood.
But he couldn't understand the bleeding part until Jake
filled him in.</p>
<p>"Northport infant's wing. Each department has its
own blood bank and donation is compulsory. Southport
started it a couple months ago, too."</p>
<p>The long arm of the Lobby had reached out again.
Now if he ever got them to try the treatment, it would
be only after long sessions of preparing them with the
facts, and there was hardly enough time for the crucial
work!</p>
<p>By afternoon, Judge Ben Wilson reached them. His
voice shook with fatigue as he climbed up to address
the crowd through a power megaphone. "Southport's
going crazy." He had to pause for breath between each
sentence. "Earth's pulling back all the important people.
They're packing them into the ships. They're leaving
only colonials with no Earth rights. Those ships left<span class="pagenum"><SPAN name="Page_100" id="Page_100">[Pg 100]</SPAN></span>
when they decided the plague was coming from here.
They won't let anybody back until the plague is licked.
There won't be an Earth technician on Mars tomorrow."</p>
<p>"No bombs?" someone called.</p>
<p>"No bombs. The ships must have started before you
rebelled, maybe meant honestly to save their own kind.
But now it's a military action, and don't think it won't
mean trouble. The poor devils in the city bet on the
wrong horse. Now they can't run their food factories
or anything else for long. Not without technicians.
They've got to whip you now. Up to this time, they've
been fighting for the Lobbies. Now they'll fight you
for their own bellies to get your supplies. And they've
still got shuttle rockets and fuel for them. Now beat it.
I gotta confer with Jake."</p>
<p>Doc started after the judge, but Dr. Harkness caught
his arm and drew him aside. Chris followed.</p>
<p>"I've found another epidemic," Harkness told them.
"Over at Marconi. It's kept me on the run all night,
and now half the village is down with it. Starts like a
common cold, runs a fair fever, and the skin breaks out
all over with bright red dots...."</p>
<p>He went on describing it. Chris began asking him
about what medical supplies he had brought with him,
pilfered from Northport hospital. She seemed to know
what it was, but refused to say until she saw the cases.
Doc also preferred to wait. Sometimes things weren't
as bad as they seemed, though usually they were worse.</p>
<p>Marconi was dead to all outward appearances, with
nobody on the streets. It had been a village of great
hopes a week before, since this was where they had
decided to experiment with switching the people back
to Earth-normal. They'd had the best chance of sur<span class="pagenum"><SPAN name="Page_101" id="Page_101">[Pg 101]</SPAN></span>vival
of anyone on Mars until this came up.</p>
<p>Three people lay on the beds in the first house Harkness
led them to. The room was darkened, and a man
was stumbling around, trying to tend the others, though
the little spots showed on his skin. He grinned weakly.
"Hi, Doc. I guess we're making a lot of trouble, ain't
we?"</p>
<p>Chris gave Doc no chance to answer. "Just as I
thought. Measles! Plain old-fashioned measles."</p>
<p>"Figured so," the sick man said. "Like my brother
back on Earth."</p>
<p>The others looked doubtful, but Doc reassured them.
Chris should know; she'd worked in a swanky hospital
where the patients were mostly Earth-normal. Measles
was one of the diseases which was foiled by the metabolism
switch. Well, at least they wouldn't have to be
quarantined here.</p>
<p>Chris finished treating the family with impersonal efficiency,
discussing the symptoms loudly with Harkness.
"It's a good thing it isn't serious!"</p>
<p>"No," Harkness answered bitterly. "Not serious. It's
only killed five children and three adults so far!"</p>
<p>"It would, here," Doc agreed unhappily. He led Chris
out of the room on the pretext of washing his hands.
"It's serious enough to force us to abandon the whole
idea of going back to Earth-normal. Measles today,
smallpox, tuberculosis, scarlet fever and everything else
tomorrow. These people have lived Mars-normal so long
their natural immunity has been destroyed. On Earth
where the disease was everywhere, kids used to pick
up some immunity with constant exposure, even without
what might be called a case of the disease. Here,
the blood has no reason to build antibodies. They can
be killed by things people used to laugh at. How the<span class="pagenum"><SPAN name="Page_102" id="Page_102">[Pg 102]</SPAN></span>
disease got here, I don't know. But it's here. So we'll
have to give up the idea of switching back to Earth-normal."</p>
<p>He gathered up one of the kits and started toward
the other houses. "And Lord knows how long it will
take to get the blood for the other treatment, even if
it works."</p>
<p>They worked as a team for a while, with Harkness
frowning as he watched Chris. Finally the young doctor
stopped Chris outside the fifth house. "These are
my patients, Dr. Ryan. I left the Lobby because I didn't
believe colonials were mere livestock. I still feel the
same. I appreciate your help in diagnosis and methods
of treatment. But I can't let you handle my patients
this way."</p>
<p>"Dan!" She swung around with eyes glazing. "Dan,
are you going to stand for that?"</p>
<p>"I think you'd better wait in the tractor, Chris."</p>
<p>He was lucky enough to catch the kit she threw at
him before its precious contents spilled. But it wasn't
luck that guided his hand to the back of her skirt hard
enough to leave it stinging.</p>
<p>Her face froze and she stormed out. A moment later
they heard the tractor start off.</p>
<p>But Doc had no time to think of her. He and Harkness
split up and began covering the streets, house by
house, while he passed on the word to abandon the metabolism
switch and go back to Mars-normal.</p>
<p>Jake sent two other doctors to relieve them late in
the evening. Things were somewhat quieter at GHQ
as Doc reported the events at Marconi.</p>
<p>"Where's Dr. Ryan?" Jake asked at last.</p>
<p>Doc exchanged glances with Harkness. "She isn't in
the lab?"<span class="pagenum"><SPAN name="Page_103" id="Page_103">[Pg 103]</SPAN></span></p>
<p>"Wasn't there an hour ago."</p>
<p>Doc cursed himself for letting her go. With the
knowledge that the radio in the mike was disabled,
she'd obviously grabbed the first chance to report back.
And with her had gone news of the only cure they
had found.</p>
<p>Jake took it as philosophically as he could, though it
was a heavy blow to his hopes. They spent half the
night looking for her tractor, on the chance that she
might have gotten lost or broken down, but there was
no sign of it.</p>
<p>She was waiting in the laboratory when he returned
at dawn. Her face was dirty and her uniform was a
mess. But she was smiling. She got up to greet him,
holding out two large bottles.</p>
<p>"Infant plasma—straight from Southport. And if you
think I had it easy lying my way in and out of the
hospital, you're a fool, Dan Feldman. If the man who
took my place there hadn't been a native idiot, I never
would have gotten away with it."</p>
<p>The things he had suspected could still be right, he
realized. She could have reported everything to the
Lobby. It was a better explanation than her vague account
of bullying her way in and out. But she'd had a
rough drive, and he wanted the plasma. Curiously, he
was glad to have her back with him. He reached out a
hand for the bottles.</p>
<p>She put the bottle on the table and grabbed up a
short-bladed knife. "Not so fast," she cried. Her eyes
were blazing now. "Dan Feldman, if you touch those
bottles until you've crawled across the floor on your
face and apologized for the way you treated me the last
few days, I'll cut your damned heart out."</p>
<p>He shook his head, chuckling at the picture she<span class="pagenum"><SPAN name="Page_104" id="Page_104">[Pg 104]</SPAN></span>
made. There were times when he could almost see why
he'd married her.</p>
<p>"All right, Chris," he gave in. "I'll be darned if I'll
crawl, but you've earned an apology. Okay?"</p>
<p>She sighed uncertainly. Then she nodded and began
changing for work.<span class="pagenum"><SPAN name="Page_105" id="Page_105">[Pg 105]</SPAN></span></p>
<hr style="width: 65%;" />
<h2><SPAN name="XIV" id="XIV"></SPAN>XIV</h2>
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