Jessica felt a growing pain coming from her abdomen, she gripped it tightly, "Hnaagh! What the hell is happening to me?!" groaned Jessica as she rolled left and right, the pain was becoming excruciating.
Eventually the pain suddenly stopped, only to then reappear in her nether regions, Jessica screamed and groaned in pain as she felt her feminine slit painfully twisting, adapting into what she was becoming.
The excruciating pain was still burning in her slit, she attempted to get up, only to fall again on the ground, suddenly the flare of pain began to ease, eventually disapearing, "I-It stopped?" asked Jessica, but she was answered as a flush of warmth filled her slit, suddenly her lemon colored panties began feeling awfully tight, she laid on her back as she saw two bulges forming in her crotch, eventually the sound of ripping was heard as her panties ripped open, revealing a pair of throbbing and growing scaly swamp green serpentine hemipenes!
"Eeeek!" Shrieked Jessica in horror as she saw her new members, by just looking at them, Jessica felt the need to touch them, she wrapped her hands across her new members, a gasp left her lips as her soft pale skin of her hands made contact with her members, feeling both of them growing and quivering in her hand.
Jessica quickly retreated her hand away from her hemipenes, she bringed the hand that grasped them close to her face, she felt it quiver as it grew in muscle, her nails fell off, being replaced with black sharp claws, meanwhile her skin cracked, slowly reshaping into the same swamp green scales adorning her hemipenes.
"Graagh! Please... Ssstooop!!!" Begged Jessica, just as she opened her mouth, a long red forked tongue came out, the virus' effects were becoming stronger by each second, Jessica felt flushed, her mind was being assaulted by lustful animalistic thoughts, she felt her hemipenes brushing against her abdomen, feeling the droplets of pre leaving them, Jessica tried to fight those thoughts, but they were too much, she eventually surrendered, rubbing and pumping her hemipenes with her scaly hand, accelerating the effects of the transformation, her legs began to ache, she then felt them slowly connecting together, becoming a long tail of a snake, the swamp green scales slowly began to extend from her members, covering her new serpentine tail in the process, Jessica slowly got up, coiling herself involuntarily with her new long tail.
"Hnagh! It's wrong..." Started Jessica, "But yet.... Ssso... Goooood...." Moaned Jessica, her mouth fell open as her forked tongue flicked out smelling the unusual scent of her changing body, she felt her breasts shrinking, eventually becoming a pair of hard pecs, scales of a cream color started covering her entire torso, Jessica felt her back aching as swamp green scales completly covered the rest of her arms and back.
Jessica felt her hair fall off, as a cobra hood developed, the scales of its back being the same swamp green, meanwhile its front having the same cream scales as Jessica's chest, she or rather he, felt his face crack as it pushed into one of a cobra, Jessica's nose completly vanished, leaving a pair of slitted nostrils behind, the swamp green scales quickly covered Jessica's new face, he blinked his eyes multiple times as they turned into reptilian ones.
Jessica now fully transformed into a male cobra-naga, let out a loud hissing gasp as he climaxed, long ropy splurts of reptilian semen splattering out of both of his hemipenes.