When I'm on the night shift, all the department heads can't sleep.

The two numbers on the note were the local contact number and the hospital's infection control night duty number.

Fang Qi handed him the night's notes and pointed to the note: "The local authorities are still verifying the routes of newly added personnel within the hospital, and the second round of testing for key personnel within the hospital hasn't been summarized yet. Both return call numbers are here."

Lin Ye dialed two numbers according to the note, gave his name and shift start time, and then signed in the handover column.

Fang Qi stood up and stretched: "How many hours did you sleep last night?"

"About seven hours."

"Then you're richer than me." Fang Qi put his work phone back on the charging dock. "I'm going to catch up on my sleep. If there's another call, it's yours."

After Fang Qi left along the cleaning route, the communication station remained quiet for more than ten minutes. The observation side called once, reported a patient's temperature, and then hung up. Apart from that, the work phone didn't ring again.

In the morning, the infection control staff called.

"The local authorities just replied that the six newly added cases have all been verified. No one came to the First Municipal Hospital during the high-risk period; their registration, examination records, and entrance registration have all been checked."

Lin Ye opened the last person's page: "Are all six people's report numbers complete?"

"Everything is ready. I'll send you the review time and reporting number from the relevant jurisdiction along with it."

The message quickly arrived on his work phone. Lin Ye added the source and time, and the "Route within the Institute" column next to the names of all six people showed the verification results.

Just after that call ended, another call came in from the designated hospital's contact doctor, transferred through the medical on-call team, requesting the original treatment area to update the referral and follow-up page.

The doctor contacted Gao Yuan and reported: "He has been admitted to a regular isolation ward. The temperature is 37.6 degrees Celsius this morning, and he can eat normally."

The on-call medical officer asked, "Did Gao Limin receive additional oxygen overnight?"

"The nasal cannula is still operating at three liters per minute; we haven't increased the rate yet."

After Gao Yuan and Gao Limin finished explaining their situations, Lin Ye asked, "After Shao Dequan adjusted the oxygen therapy parameters, was he able to answer normally?"

"He can open his eyes and answer simple questions. The critical care team is continuing to assess his airway, and the intubation equipment is ready. Xu Wenliang's high-flow parameters have not been adjusted, and both of them will remain in the intensive care unit."

After the four people's conditions were reported, the on-call medical officer instructed over the phone: "Once this is recorded, the fever clinic won't need to relay the information layer by layer anymore. If the condition changes later, the receiving hospital will contact the family members and the hospital-level treatment team directly."

Lin Ye filled in the communication time and subsequent contact person, then put the receiver back on the landline. The on-call medical staff continued to liaise with the receiving hospital.

Not long after, the laboratory called to report the test results for the second round of key personnel in the hospital.

"The quality of this batch of samples is fine, and no relevant targets were detected. The paper results have been sent to the emergency response team."

After the test results were sent to the emergency response team, a recovery criteria form was quickly distributed to all areas. The hospital maintained a temporary closed loop, and the original transfer route from the emergency department to the radiology department was used for recovery assessment first.

The emergency room entrance called quickly: "Logistics is at the entrance. Can the yellow safety barrier be moved now?"

Lin Ye looked at the recovery criteria form that had just been sent. The relevant staff had completed this round of testing, but the terminal disinfection, environmental sampling, and access control switching plans were still awaiting confirmation.

"The notice says that resumption can only be carried out after all four conditions are met." Lin Ye relayed the message according to the conditions list. "Have the logistics and infection control personnel go there first, and don't move the isolation zone."

The elevators in the inpatient department and the general outpatient area will continue to operate as originally planned and will not be restored along with this passage.

Since the original transfer channel was closed, critically ill patients have been taking an alternate route, having to pass through two extra doors each time.

Cleaning staff re-entered the corridor and, following regulations, cleaned and disinfected areas from door handles and handrails to places easily touched by the wheels of the transfer bed. Infection control personnel then collected environmental samples and recorded the sampling time on a log sheet outside the corridor.

The yellow safety barrier is still blocking the entrance.

On Sunday noon, Lin Ye handed over the communication station to the next shift and returned to the cleaning rest point.

Someone in the regional work group asked if the original access route could be restored in the afternoon, and the infection control staff replied that "environmental samples have not yet been returned" without giving any advance notice.

After finishing the boxed lunch delivered from the guard post, Lin Ye sent a message to his mother to let her know he was safe.

The mother sent back a picture of the blood pressure monitor screen.

[Your dad had his temperature checked today and took his medicine. He wore a mask when he went out to buy groceries, and complained about it hurting his ears on the way back.]

Lin Ye glanced at the numbers; they were within his father's usual range.

Tell him not to mind, and to wear it for now. You don't need to keep an eye on your phones; I'll let you know when I have time.

I know. You can go to sleep.

Lin Ye put his phone by the bedside and slept until evening.

Upon waking, environmental samples were still being tested, and the recovery status remained pending assessment.

He was not on the duty roster that night.

After dinner, Lin Ye took a shower in the cleaning area, changed out of the clothes he had worn all day, and went back to his folding bed early. The work phone outside the door rang several times, but the staff on duty answered it each time, and no one came in to call him.

On Monday morning, he returned to the clean area of ​​the fever clinic as scheduled.

The infection control staff then sent the environmental sampling results to the contact desk.

The terminal disinfection record and access control switching plan have been signed off, no relevant targets were detected in the environmental samples, the disinfection time and sampling points are consistent, and the last empty space has finally been filled.

No new positive cases were found in the latest round of testing of key personnel.

Based on this, the emergency response team issued the first batch of restoration instructions: the original transfer channel from the emergency department to the radiology department is scheduled to resume one-way traffic at 10:00 AM. The specific switch will be implemented after confirmation by the emergency department, radiology department, and access control. Restrictions in other areas will remain in effect, and relevant personnel should complete subsequent health monitoring and testing as planned.

Lin Ye was responsible for forwarding this instruction to the emergency room cleaning staff and the radiology department.

The emergency department quickly replied "received," but the radiology workstation never confirmed.

Around 10 a.m., the logistics staff had already arrived at the original passage entrance with the printing instructions, ready to untie the yellow isolation tape.

Lin Ye watched as the logistics staff reached out to touch the knot, and two lines of light blue writing appeared at the edge of his vision.

[Risk Area: Intersections Exist During Channel Switching]

[Key gaps: Real-time status of backup channel in transit, confirmation from the radiology department's receiving end]

He immediately called the emergency room entrance: "Are there any patients in the backup lane?"

The nurse who answered the phone glanced at the transport log: "We just brought in a patient for a head CT scan, the stretcher hasn't returned yet."

"Don't touch the existing barrier in the original passageway. I'll ask the radiology department again."

After the radiology department answered the phone, the staff on duty first asked him which patient he wanted to send over.

Have you received the notification that the original access route has been restored?

"I saw it at the workstation. The patient was still being scanned and will need to use the backup route on the way back. The access control system hasn't received the switch call yet, so I haven't confirmed it."

"Please call back once the patient returns to the emergency room. Once the backup access route is cleared, both access control systems will be switched off together."

Lin Ye reported the situation to the head medical officer on duty. The officer checked the status of the emergency room, radiology department, and access control, and postponed the reopening time until after the last patient returned. The logistics staff received the new notification and withdrew their hands from the knots in the isolation zone.

A few minutes later, the patient who had undergone a head CT scan returned to the emergency room via the alternate route. The nurse announced the patient's name, and the access control clerk crossed out the last item in the "on the way" column.

The radiology department then made a confirmation call to the fever clinic.

"The backup channel has been cleared; you can switch now."

Access control personnel first closed the backup route, then reopened access to both ends of the original transfer channel. After each side swiped their cards once, the indicator lights changed from red to green.

At 10:12, the logistics staff member squatted down again and untied the yellow safety tape from the doorknob. The tape had been stuck on for a while, and when he tore it off, it brought with it a small piece of old wall plaster. He rolled up the safety tape and put it into a recycling bag along with the temporary sign.

Around 11 o'clock, the work phone rang again.

"Lin Ye, your zoning records have been checked, and the infection control report has been signed off," said the head medical officer on duty. "You haven't entered the isolation observation area. When you checked the re-samples at the fever clinic handover point, your protective gear and removal records were complete, and several consecutive tests showed no abnormalities."

The other person paused for a moment, then continued, "Take over the fever clinic area at 1:30 PM, change your clothes, do hand hygiene, and then transfer back to the emergency room cleaning post through the designated access control."

"Clear this area by 1:30 PM, change your clothes, do hand hygiene, and return to the emergency room cleaning station through the designated access control." Lin Ye repeated the instructions, and the other party hung up only after confirming that everything was correct.

The new shift schedule was then implemented at the workstation, with Qin Hai listed in the emergency department's supervisor column. The infection control department had already confirmed his return-to-work route: exiting the cleaning break room on the second floor of the administration building and entering the emergency department's cleaning post via the designated staff entrance.

When it was time for his shift, Lin Ye completed the handover of the fever clinic's clean area, changed into his emergency room uniform and a new surgical mask, performed hand hygiene according to procedure, and swiped his card to open the staff passage on the emergency room's clean side.

The doors to the original transfer corridor have been opened. The general outpatient clinic has not yet reopened, and the triage desks, waiting lines, and transfer areas in front of the emergency and critical care entrance have been separated again.

Lin Ye signed his arrival time on the new shift schedule.

At the entrance, nurse Jiang Wen handed him a blank trauma treatment registration form: "Wound cleaning area number one is yours. I'll call when a patient comes in."

Lin Ye took the registration form and placed it next to Qin Hai's superior's signature folder.