Quarantine Zone: The Last Check puts players in charge of checking survivors for signs of a deadly disease that turns people into zombies. Failure to detect symptoms means that the infected will mix with the healthy, ending in disaster when they turn into zombies. This guide will walk players through the process thoroughly check individuals for signs of disease and infection i Quarantine Zone: The Last Check.using different tools and techniques.
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How to look for signs of infection in the quarantine zone: The final check
At the beginning of the game, with no other tools at their disposal, players will use one flashlight to look for symptoms. All possible symptoms can be seen in the menu by pressing C or down on the D-Pad.
All symptoms will be marked with one of three boxes. When you see one, be sure to do it click on the relevant box and keep looking for more, like survivors may have several symptoms.
Green – Sick
This is a symptom of diseasebut not infection. A survivor with only sick symptoms may be sent to the Survivors Block to await evacuation.
Orange – Sick or infected
Orange symptoms can only be disease, but they can also be signs of infection. Send these survivors to go into quarantine and check them the next day.
Red – Infected
If a survivor has any red symptoms, they are infected and should be sent to Liquidationwhere they will be killed.
Sending them to the right area
After checking all possible symptoms, open the deployment menu with (TAB/Back key). All selected symptoms are displayed on the left. Based on this information, send them Survivors Block, Quarantine or Liquidation.
Even if someone has no red symptoms, if they have lots of orange symptoms, they are likely infected, so don't take any chances and kill them.
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Recheck those quarantined every day in the quarantine zone: The final check
After sleeping, always start the new day by re-inspecting survivors who have been quarantined. About their the symptoms have disappearedthey are healthy and can be sent to the Survivors Block.
To do so, walk up to them and press (E/X/Square). They will go out of the glass booth to be inspected. You can then redistribute them based on what you find.
Symptoms that they had before will still be there selected from earlierso if these are no longer available, deselect them.
If they have turned into a zombie overnight, use the Clear button to incinerate them in the glass box.
As the players develop over the days, they will unlock new tools to help them look for signs of infection. Usually they are made available due to the presence of new symptoms. These tools can also be upgraded by spending Research Points (RP).
Thermopulsometer
Unlocked on the second day, this tool can be used to search for abnormal high pulses and temperatureswhich may be signs of infection.
Wait a few seconds with the thermometer before taking your final reading. Anything over 41 degrees Celsius is a sign of infection, as is a pulse over 180 beats/min. They can also be sick or infected with slightly lower results, the range of which can be seen in the menu. The upgrade that gives color helps tremendously, as players don't have to memorize the boundaries.
Sneezing and hiccups are other indicators of these symptoms, so double-check anyone making these sounds.
Reflex hammer
Hit survivors on the arms or legs to test theirs reflexesbut do not hit survivors on the skull or torso, as this will damage them. If they seem sluggish, they may be infected.
No reaction simply means they are sick, but if they attack you there is a risk of infection. If they respond with their opposite limb, they have the virus.
Also watch out for people with a slack jaw, signs of slow or faulty reflexes and possible infection.
Scanner
In case of symptoms such as bite marks are hidden under clothingshould the scanner be used at all times. It is unlocked after the first evacuation.
Players should perform full body checks with the scannercovers all angles and even looks under shoes, as there may be hidden bite marks on the feet.
Stethoscope
If survivors sound like they are having difficulty breathing, use Stethoscope to check for infection. If the lungs are bright yellow, they are healthy.
If there is one black spothover over it and look for waves on the stethoscope. High amplitude waves are a sign of disease. Listen to the sound and match it with the known symptom sounds. Players will need to use the lab to discover more, one of which sounds like a lion growling.
A few more advanced tools will be unlocked after thesebut it can take a while, and players should have been diagnosed by now.
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Tips for spotting symptoms in the quarantine zone: The final check
The following are some tips for spotting signs of illness or infection in Quarantine Zone: The Last Check:
Check the eyes with a flashlight
Shine a flashlight into the survivor's eyes and get up close so nothing is missed. If they wear sunglasses, remove them before inspecting. The flashlight is switched on and off with (F/RS/R3).
View from the back & sides
Don't make the mistake of only examining from the front. Go around them and scan the back of their legs, arms and neck. Look at the survivor from all anglesbecause it is easy to miss a bit mark or other characters.
Take your time and double check
Usually there is no rushso take your time to check survivors and make sure you examine everything and consider all possibilities. The risk of letting an infected person in among the healthy is not worth it.
Use Zoom & Crouch to see better
Some symptoms can only be seen up close, so be sure to use Zoom button (RMB/LT/L2) as well Crouch (CTRL/B/Circle) to look at bones, for example.
Bite marks can even appear on the feet, so check these with the scanner when unlocked.
Ignore what survivors say
Survivors are naturally afraid and will lie about their condition. Don't listen to them, but instead look at the evidence with your own eyes.
Remember to click on symptoms before deciding their fate
You are rewarded with more research points for marking most symptoms correctly, so be sure to log the symptoms, instead of just sending them to the correct zone.
Don't forget to check them in quarantine every morning
It's very easy to forget and go straight to inspecting new survivors, but it's important to check the quarantined ones first, as they are a danger and spaces can be freed up.
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Develop a routine
As players unlock new tools and learn about new symptoms, it's easy to forget some. Therefore, consider making and sticking to a routine, checking every conceivable symptom in the same order each time.
Zombie parts in bags are a biohazard, so treat the owner as infected
Contrabands such as weapons should be confiscated, but they are not signs of infection. However, any survivors wearing zombie parts, such as skulls, should be treated as infected, as they pose a biohazard.
- Released
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January 12, 2026
- Developer
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Brigade game
- Number of players
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Single player
- Compatibility with Steam Deck
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Unknown
