Apart from the initial rush of SG-1 that morning, the infirmary had been very quiet all day. Janet had taken this opportunity to catch up on her paperwork that had slowly been building up over the past week, and she was thankful for the chance. Her working time hadn't been interrupted at all for health purposes, except to check up on Daniel, who had been fast asleep all morning.

Fast asleep.

All Morning…

That wasn't like Daniel, Janet had thought, but she had left him to it. It was only when the alarms for Gate activation had gone off, and Daniel didn't even stir, that she realised something was wrong.

What she discovered worried her.

It worried her a lot.

***

It had been a very quiet day for Hammond, also. Only three teams were currently off world, and SG-3 had just returned on schedule. SG teams 6 and 10 were not due back for another 48 hours, and no one was due for a mission until early tomorrow. As a result, Hammond had quite a lot of free time on his hands and had been on the 'phone to Tessa and Kayla for the past forty minutes. They were glad to hear from him, as they hadn't seen, or spoken to, their Granddad for a few weeks.

Hammond put the 'phone down and smiled. He was glad to have spoken to the girls, and was happy that he still had an impact on their lives, despite being away from them so often for so long.

There was a knock on the door and Hammond sat up. He had barely said, "Come in," when the door burst open and Janet hurried through. "Doctor Fraiser. What can I do for you?"

"General, I'm sorry to burst in, but I've just run a bloodscreen on Daniel and the results were… disturbing."

"What is it, Doctor?" he asked, getting worried, "Is he okay?"

"He's going to be fine, sir. Don't worry. It's Colonel O'Neill I'm worried about."

"But I thought you said…"

"Sir," she interrupted, "there's a large amount of anaesthetic showing up in Daniel's blood. I didn't sedate him, and the only visitor he's had today… is the colonel."

Hammond looked shocked. "Are you telling me that Colonel O'Neill…"

"No sir. I told you I had found what looked like a Goa'uld entry mark on Daniel's neck when he came in this morning, but there was no evidence that the symbiote was still there…" she paused. Taking a deep breath she continued, "Given that Colonel O'Neill was the only visitor today, and the results of the blood test, we have to consider the possibility that the symbiote has switched hosts…"

"And is now in the colonel." Hammond presumed, completing her sentence and confirming what he had feared since Janet had said the Goa'uld had left Daniel's body. Janet nodded slowly. Hammond stood up, not sure what to do next. "Do you know where the colonel is now?"

"I'm sorry sir," she replied, "I haven't seen him since this morning… he was acting strange. I'm so sorry I should have seen it, sir."

"It's okay, Doctor, you couldn't possibly have known what was going on. The important thing is that we find the colonel now."

Hammond got up to walk out, but Janet stopped him. "Sir, there's more." Hammond turned back. "I have no idea how or why, but this Goa'uld seems to be… different."

"How do you mean, Doctor?"

"Well sir, I told you there was no protein marker left over when the Goa'uld left Daniel's body, but there was absolutely no evidence that it was even in there, apart from the entry wound which would heal anyway. The symbiote does have the ability to kill the host before it finds another, but luckily for us it decided to leave Daniel alive. We ran an autopsy no the woman who came back with SG-1. She was Jaffa. It's a good guess that she had carried her larval Goa'uld to the point of maturity, and that's when she came here."

"But she died. Presumably when the symbiote left her?"

"As you know, the symbiote acts as the immune system of the Jaffa who carries it, I would say that's why she died, but that doesn't explain why it left Daniel unharmed. I think it's up to something"

Hammond was getting increasingly concerned. "Let's just hope this symbiote feels like leaving the colonel the same way it left Doctor Jackson: Alive."

"Yes sir," Janet replied. The two left Hammond's office and were greeted by Teal'c.

"General Hammond, Doctor Fraiser."

"Teal'c," Hammond replied, "Have you seen Colonel O'Neill?"

Teal'c nodded. "Indeed I have, General. O'Neill informed me that he was looking for Major Carter. I told him that she was in her lab. He then went to find her."

Janet tore away to the elevator, closely followed by Hammond as he explained to Teal'c what was going on.