Overview
Description about the fifth infection called the ‘Invisible Strain’.
Invisible Strain description (IS for short)
The invisible strain is an infection that turns survivors into zombies with the ability to camouflage as humans.
When one of your survivors catch the invisible strain or already had the invisible strain when recruited then your base is in grave danger.
There exist methods to identify infections early as well on how to avoid recruiting infected survivors.
If you fail to contain the infection then all your save files will be wiped and it will autosave upon the outbreak.
How to avoid getting infected
- The leader or first survivor cant catch the invisible strain. If you plan to visit new settlements use your leader to scout it out.
- Keep your survivors away from strangers unless the player (you) is present.
- Keep your doors closed when travelling merchants arrive. They like to wander around your base and if they happen to have the IS they WILL focus on stray survivors and infect them while no one is watching.
- If you recruit new survivors keep close watch on them. If you happen to hear growling or snarling then it means one survivor caught the IS. Either kick out the new recruit or try to use the methods in this guide to snuff them out.
- If you own a brainscanner then only recruit survivors with 0% infection chance. The brainscanner only picks up on suspicious personalities. A survivor with 90% isnt guaranteed to have the infection similiar a survivor with 20% could possibly have the infection. IS will never have a 0% so they’re safe to recruit.
How to detect Invisible Strain
- If you hear groaning or snarling without zombies around then the IS is present.
- Survivors that groan will have a wide open mouth. They’re guaranteed to have the IS
- Keep watch on the community tab or the health of your survivors. If they get random injuries while inside the base then that means they got infected.
- IS will bite survivors to infect them similiar to zombies. They’ll always avoid detection but sometimes you can see a glimpse of it happening.
- Take suspicious survivors on a stroll and listen to groaning or snarling to confirm if they have the IS.
- You can unlock 3 interrogation options to identify infected survivors.
- They require the survivor to have one of the three personality traits: Cynical, Skeptical or Smart.
- To unlock each interrogation talk with other factions and eventually an unique dialogue will show up which mentions not trusting other survivors.
- The smart interrogation require both parties to be smart to be unlocked.
- Once you have the interrogation unlocked use your leader to talk with base members.
Infected survivors will have an evil grin when interrogated.
Infected Survivor gets Interrogated
Infected Survivors growling
- Infected Survivors tend to growl a lot once they’re ‘excited’.
- Survivors get more excited through fighting.
- There exist exception to this rule.
- Infected Survivors can have the ‘subtle’ attribute which makes them growl less or not at all.
- If an infected Survivor gets too ‘excited’ they will turn on the spot and start attacking indiscriminately.
Infected Survivors get too excited
Dealing with infected survivors
(Work in progress)
Invisible Strain Outbreak
The outbreak turns every survivor in your settlement into invisible strain zombies.
Once it happens all your saves will be wiped and a new autosave will be placed instead.
Make a copy of your save folder to avoid losing all your progress.
Invisible Strain zombies are super zombies. It is advised to not engage them in combat.
If you have to fight one but dont know your chances of winning, visit the weapon guide.
It showcases how effective each weapon is and how much health they have.
Interrogation Cynical
Interrogation Skeptical
Interrogation Smart successfull
Interrogation Smart unavailable
Interrogation Smart Unsuccessful
Author Notes
I figured out that there is no actual warning or proper description on the invisible strain outside of the discussion tab.
I updated the guide with images of confirmed infected survivors and how to unlock the interrogation options. It’s purely random on wether you get the interrogation dialogue, simply continue talking.
Will update in the future.