"That's because there's the pressure in your brain with the swelling from the infection. All the neuro-receptors are in the brain, the messages sent to your body to tell it what to do. That's what is making you feel constantly nauseous, along with the fact it's one of the prominent symptoms of malaria. Once the antivirals start to work more, you'll begin to feel better. But you didn't make Casey sick. He was very closely monitored and tested when he brought you in because he had been closely exposed to you, but this was before they knew it was malaria. Which is mosquito-borne, so he couldn't have caught it off you. That part, you can rest easy with," Ethan reassured him and checked the chart to see what fluid orders had been made.

He gave Callum the cup of water he had nearby. "You're allowed to have some small sips if you feel up to it. It won't help much with the hydration, that's what the drip is for. But it might help a little to have something to sip on. Malaria is an infection in the blood stream, carried my mosquitoes. It can make you very sick, as you've experienced, but it's very treatable. But because it may have been in your system as early as the day you arrived, it's caused encephalitis. Jesse's resting up. He'll bounce back. It just takes a little while. I've known him since he came to New York about two years ago and we've been close friends ever since. He listened when I needed someone to talk to."