Summary
- Identify infected survivors by checking for specific symptoms by using tools like thermometers, scanners, and flashlights.
- Symptoms have three categories such as green (safe), orange (possibly infected) and red (definitely infected).
- Make correct decisions regarding survivor placement as one infected person can doom the entire quarantine zone.
Instead of battling against hordes of undead, Quarantine Zone: The Last Check lets you examine survivors heading into a safe zone. You have to make the decision if they are infected with a deadly disease before letting them in a safe zone. Be careful as missing a single symptom may cause you a catastrophe. So, here’s everything you need to understand from all symptoms in the Quarantine Zone: The Last Check!
What are the Three Symptom Categories

There are three distinct categories for every symptom in the game. Each category requires different actions as they represent the level of infection that the NPC has. Check this chart to help you understand the symptoms level better:
|
Color |
Explained |
|
Green |
These indicate regular sickness and don’t pose an infection risk, allowing them to safely enter the Survivors Block. |
|
Orange |
They could either indicate simple illness or early infection requiring them to be put in a quarantine for observation. |
|
Red |
Delivers a confirmed infection and must be immediately sent to liquidation. |
Complete List of All Symptoms and Their Status

To succeed, you must know which symptoms fall into each category. So here is a categorized list of all symptoms you’ll encounter in the Quarantine Zone: The Last Check.
|
Symptom |
Indication |
|
Yellow eyes |
Safe |
|
Freckles |
|
|
Bruises |
|
|
Conjunctivitis |
Quarantine Observation |
|
Skin cuts |
|
|
Temperature between 37-41 degrees |
|
|
Pulse rates of 120-180 bpm |
|
|
Hyper reflex responses |
|
|
Necrosis |
Infected |
|
Bite marks |
|
|
Red eyes |
|
|
Temperature exceeding 41 degrees |
|
|
Pulse rates over 180 bpm |
|
|
Cross reflex responses |
|
|
Sneezing |
Quarantine Observation |
|
Hiccups |
|
|
Coughing |
|
|
Sick Breath |
Essential Tools for Detecting Hidden Symptoms

To help you further inspect the survivors, you will get to unlock specialized equipment as the game progresses. These items should reveal symptoms invisible to your naked eye like thermopulsometer, reflex hammer, and more. Currently, these are all the tools you can unlock that will help you:
|
Tool |
Function |
|
Thermopulsometer |
Available on day 2 that helps measure your body temperature and heart rate after a few seconds of contact. |
|
Reflex Hammer |
Tests your neurological responses by striking limbs with slow reactions, opposite-limb responses, or aggressive reactions that may indicate potential infection. |
|
Scanner |
Helps you to find hidden bite marks beneath clothing or even on feet with its full-body examination. |
|
Stethoscope |
Check on lung health. A clear yellow indicates safety while black spots with high-amplitude waves or unusual sounds suggest potential infection. |
These tools are extremely helpful as you go further through the game. You can upgrade these items using the Research Points to make diagnosis easier and more accurate.
Critical Mistakes to Avoid

Make sure to thoroughly check every body that goes through to avoid letting anyone that may compromise the quarantine zone safety. These errors usually occur during the inspection that you should take note of to avoid reenacting.
-
- Never forget to actually mark symptoms before sending them to their designated areas. It will affect the Research Point rewards you will need for tool upgrades.
- Immediately direct to the infected zone the survivors that carry zombie parts in bags.
- Avoid hitting survivors in their head or torso while testing reflexes as it may cause them harm.
- Don’t rely solely on front-facing examinations since some symptoms are hidden on their back, sides, or even underside of their feet.
- If you’re dealing with multiple orange symptoms on a single survivor, send them to liquidation instead of risking an outbreak.
- Finally, establish and maintain a consistent checking routine so you will avoid overlooking symptoms.
Conclusion
A keen eye and sharp decision making will decide your success in examining all symptoms in Quarantine Zone: The Last Check. What matters the most here is to avoid compromising the security of the quarantine zone by letting in infected survivors. If you’re unsure, it is better to place them in liquidation or quarantine zone to prevent an outbreak.
Writer’s Recommendations
Hi there, it’s Stal! If you loved that article, make sure to check out these other articles I’ve written just for you. See you there!