Kyuubi was still within Shukaku's bloodstream (how he could breathe, I have no clue...) and working his way to the kidneys. The kidneys and liver are important to keep the body in tact. If Shukaku's eyes turn yellow, (or in his case, green) the liver's being effected, so the kidneys would've already been infected. (I watch House...)
Kyuubi didn't talk to Shukaku throughout that time, because if he did, he'd drown (wow... he's using common sense). He'd been swimming for a while until he came to an opening and slid through. Unfortunately, it looked like the germ might being more damage than he first thought. He came to the kidneys and they looked disgusting. They almost looked swolen. "Hey, Baka, I'm at your kidneys. You know that germ?"
"What about it, Teme?"
"It spread and multiplied. Your kidneys look swolen."
"What?! Teme, don't lie to me right now!"
"Why would I lie about something serious, you Baka?! We have to get the germ out before it spreads to your liver!"
Outside with Shukaku and the girls, Shukaku couldn't believe what he was hearing from Teme and he didn't know if Kyuubi was lying or not. Deiara was keeping quiet. Her short hair didn't cover her, but it covered her eyes. "Child of hell" ... Is that all I am?
She shrugged it off and looked at Jess and then Shukaku. She didn't really know what to say at this point and just kept quiet.