(figured successful treatment wasn't liked so that's why it was branched away from and didn't get as many votes. So Here's another take going the other way. I hope you enjoy it.))
David was lying back on the hospital bed, still unconscious from the treatment. He appeared to be human again, though his hair was still long and black.
A doctor walked in, to check some of his vitals alongside his mother as he was wheeled outside the sterile environment. Things seemed calm here, with a little light from a secure window and one or two other patients that had been transformed slightly by the virus- though not in particularly drastic ways. In a booth next to David was a man with owl eyes. He explained he had trouble moving them to the nurse as a light was shone into them. On the bed opposite was a teenage girl who looked to have gained elfin ears and green hair. The girl seemed a bit... more shocked then she should have been for such a minor change though. Nobody was attending to her yet.
David's mother, Janet, looked at the hospital and relief as her son was being attended to. "Can you tell me more about this treatment? In all the rush to decide, I feel I wasn't given all the information." It was perhaps a little late now to ask about it but...
The doctor nodded as he checked David's vitals. "Well, this particular strain on your son is quite old... and we know a little more about it then the other viruses out there." The work was certainly something to be proud of, as he went into further detail on all the testing they have done. The data they gained from treating David would be invaluable for this strain too. Even if the virus mutated a lot, sometimes in a situation like this they learned just a little more.
Janet sighed. It was all far too complicated and she wished she understood it. Still seeing her son, looking back to normal... The young mother was then taken aside to fill in further paperwork.
As the two walked away from the sleeping David, something... strange started to happen. The virus deep inside his blood was in a state of 'molecular confusion'. Not that a virus thought or had feelings, of course. It had various protein markers to prompt it into particular stages and states. But those stages were now confused and that was very dangerous as it interacted with 'other' viroids, which were marked differently. It was akin to being given a much older code that partly worked to decode a vast genome but it only got so far before auto-corrective mechanisms came into play.
Suddenly David gasps as he felt an instinct to draw in a large gulp of air. The virus had reset itself, to work again.
Forcefully, and almost painfully this time, the rabbit-ears re-grew and pushed outward from the top of his head. The heart rate monitor started to quicken, though not yet to alarm a doctor. The nutrient feed reacted automatically to the increased metabolic activity giving more electrolytes into his system. The large white rabbit ears flopped onto his head. They were easily just as big as before.
Once again, as before, David started to shrink as the virus tried to do what it did before following its pre-programmed path. His features softened, though the virus didn't have to work on his hair this time as it already had the markers. It didn't turn her hair white this time, which was an odd contrast against the white fur of her ears making them that much more noticeable. This naturally gave it even more energy to work with, as new rabbit ears formed with a soft fuzz of white fur.
His manhood disapeared, turning into a female configuration very quickly. Her body started to pinch in at her hips, making them give the broadened look of a teenage girl. This was a bit of an odd state to be in for the virus. It has already made all the changes, so the road to the changes were already there, marked and mapped out. Again not much energy was being used for the transformation, leading to a massive energy surplus. Transforming her legs took less energy, as did forming the tail once more.
David regressed in age again.. a year gone, a second.. three, four... possibly five? As if trying to achieve a delicate balance at this stage of her life, breasts started to form on a very slender, yet cute- bordering on an inappropriately sexy frame for her age. She was certainly well endowed for her age. She appeared to be about twelve to thirteen years old again looking exactly as she did before the virus struck her. Her feet were now digitigrade with lovely white paws and fur running up her legs.
The virus had finished its work.
...and yet the virus was now in a state of flux. There was a certain magical element in it, in that it could 'do no sickness', or anything that might be considered a sickness. The subject it was in now, had been through too many transformations. The cells were already strained and it could not make new structures. Neither could it burn off the excess energy as before since her metabolism was already at an uncomfortable state to do that with. It could lay no further 'roads' to transformations, as it was at the end stage of it's cycle. it only had the roads it had already walked, like a marathon runner who had just ran out of track... but still had to run. Not by much, but the energy had to go somewhere.
It started to shrink David down further, a little closer to the size of a rabbit (though not all the way.) her height was now about four feet- five if you included her large ears. It was almost enough to restore the balance... almost. What else to do? Something innocuous perhaps...
A new structure formed on David... and finally, the energy balance was restored as the virus died.
The doctors (and David's mother) Gasped as they saw that their treatment had failed. It looked like Janet would continue to have a daughter after all. They quickly looked her over, to make sure there were no further complications... David herself was sleeping quite soundly, and didn't seem in any distress... not yet anyway. That would probably come when she woke up. They slowly took in all the changes, as the doctor wrote a few notes on what might be the 'side effects' of the nutrient viro-broth treatment they attempted.
Her mother sat beside her, with a guilty look. This was her fault. She felt... horrible. She had let down her son, horribly.
David slowly woke up. "Mom?" She asked, hearing her feminine voice she felt crestfallen. "It.. didn't work," she said looking down. Why... did she feel so weird? She felt somehow both big and small at the same time. Why did her breasts feel so.. weird too? She never had breasts before, but they felt a little... crushed now then before. She reached for the covers, aware of how big the bed was.
"Now honey try not to panic," said her mother warily as David unfurled the covers.
At the sight of her body, David screamed, her voice echoing across the hospital corridors.
"Calm down!" Janet rushed to her son turned daughter.
David calmed down as much as she could almost hyperventilating in her breath. She was a shorter rabbit-girl then before, so much so that getting off the bed was going to be a bit of a struggle. But that wasn't the worst of it. She now had a third breast, in the middle "“ or was that the middle? It looked fairly 'natural' on her, even if it was completely unnatural! "Oh... God... I'm a freak, a freak!" she said crying. Her mother hugged her to assure her she wasn't but..
Eventually a doctor came in. "I'm very sorry David..."
David wanted to scream at the doctor. It was their fault! But... no... this was her own fault. She wanted the treatment. She rolled the dice and this is what she got. "I- I know. I knew there was a.. a risk." she sighed heavily. She was a young rabbit girl.. a more freaky one then before. This wasn't... good. She couldn't go to school like this!
"I know it's not a lot but- uh- here are some pamphlets for you." The doctor gave them with a little smile.
David looked them over. They looked to be fairly simple guides and included: 'So you're a girl now', 'living the best years of your life again', 'a big world and how to deal with it'. Slipped on the inside the 'girl guide' pamphlet was a smaller one called 'Dealing with three things at once' which forced a full body blush on her. That last one looked to have been downloaded from the internet as it was a pretty rare transformation, no doubt because of the 'unnatural tweaking' they tried on her. She gritted her teeth a bit as she practically threw herself off the hospital bed. "I should have listened to you mom," she said sniffling.
Janet picked up the short rabbit-girl. "I'm sorry honey... it was my fault. We'll... cope, I promise. You're not actually that bad. You're just a little shorter then before, that's all. You could have gone worse."
"I'm a freak," she said glancing down at her chest.
"Well, there are ways to hide that. We'll figure a few things out, alright?" Janet knew though it would be a struggle to find such specific demanding clothes for her daughter.
