Editing Immunity Gain Speed

{{Stub|reason= [[Genes]] and order of operations}}{{Stat
| Default Base Value = 1.0
| to string style = PercentZero
| description = The speed at which this character gains immunity to [[disease]]s. If this is too slow, the character will [[Death|die]] from the disease before developing immunity.
}} Base value is 100%. The value shown in-game is rounded to the nearest whole percent, while exact value is used in calculations.

While this stat can be seen in-game, the '''actual immunity gain speed''', measured in immunity gain per [[Time|day]], is hidden. It is calculated as a product of:
* Base immunity gain speed for the particular disease. For example, 23.88% per day for human Flu.
* InfectionLuck, a pseudorandom factor ranging from 80% (Bad luck) to 120% (Good luck). It is calculated independently for each disease instance (when multiple pawns are affected by a disease outbreak, each of them gets their own disease instance). Wound infections in different organs of the same pawn are different instances, but only InfectionLuck of the oldest active infection comes into play (and only one infection immunity develops in organism, opposing all infection instances). ''Technical details: InfectionLuck is not stored in save file. Instead, it is calculated as a pseudorandom value depending on the world's seed (seedString) and disease's hediff ID (loadID). For example, it is ≈81.7511% for seed InfectionLuck and ID 1947.''
* Immunity Gain Speed stat.

Immunity gain speed is '''not''' affected by medical tend quality.

==Stat factors==
Immunity Gain Speed stat is determined by many factors multiplicatively.

===Capacities===
[[Blood Filtration]]: [[Blood Filtration Importance::0.5|50%]] importance. No allowed defect. [[Blood Filtration Limit::-|No]] Max. So,
: {{math|Blood filtration factor {{=}} Blood Filtration &divide; 2 + 50%}}
Notable facts:
* [[Malaria]] progressively reduces Blood Filtration.
* A missing [[Kidney]] reduces Blood Filtration by 50%. This alone results in a Blood filtration factor of 75%.
* [[Cancer]] progressively reduces efficiency in the body part affected, potentially reducing Blood Filtration if it is in the Kidneys or [[Liver]].
* [[Luciferium]] adds 70% to Blood Filtration. This alone results in a Blood filtration factor of 135%.
* [[Detoxifier kidney]]s each add 5% Blood Filtration each compared to a healthy kidney. This alone results in a blood filtration factor of 102.5% (105% with two).
** This is mutually exclusive with [[Immunoenhancer]]s

===Saturation===
[[Saturation|Hunger/Food]]:
* 100%: Fed or Hungry
* 90%: Urgently Hungry (corresponds to Ravenously Hungry)
* 70%: Starving (corresponds to Malnourished)

===Rest===
[[Rest]] need:
* 100%: Rested
* 96%: Tired (corresponds to [[Thoughts#Exhaustion|Drowsy]] thought)
* 92%: Very tired (corresponds to [[Thoughts#Exhaustion|Tired]] thought)
* 80%: Exhausted (corresponds to [[Thoughts#Exhaustion|Exhausted]] thought)

In Bed:
* 95%: When resting/sleeping in an [[ancient bed]] {{IdeologyIcon}}.
* 100%: When not resting/sleeping or when resting/sleeping on the floor, ground or ([[animal sleeping spot|animal]] / [[double sleeping spot|double]] / [[baby sleeping spot|baby]] {{BiotechIcon}}) [[sleeping spot]].
* 105%: When resting/sleeping in a ([[double bedroll|double]]) [[bedroll]] or [[animal sleeping box]].
* 107%: When resting/sleeping in an [[animal bed]], ([[double bed|double]]) [[bed]], [[royal bed]], ([[slab double bed|double]]) [[slab bed]] {{IdeologyIcon}} or [[deathrest casket]] {{BiotechIcon}}.
* 111%: When resting/sleeping in a [[hospital bed]].
* 113%: When resting/sleeping in a hospital bed with attached [[vitals monitor]].
''Note that quality of the bed only influences the [[Rest Effectiveness|rest effectiveness]], not the immunity gain speed.''

Resting:
* 100%: Not resting. Also, when [[downed]], despite visually lying.
* 110%: Resting, sleeping or [[Recreation#Activities_table|skygazing]] (cloudwatching, stargazing, etc).

===Age===
{{Stub|section=1|reason=Verify the effect of things that affect life span, such as the [[Genes#Mild cell instability|cell instability]] gene, then provide examples for the resulting lifespans in the Age/IGS table - if verified, also verify on [[Disease]]}}
Generally, the multiplier for age follows a curve defined by 5 points.
{| class="wikitable"
|-
! Age !! Multiplier
|-
| 0.65 * Life Expectancy || 100%
|-
| 0.80 * Life Expectancy || 95%
|-
| 1.00 * Life Expectancy || 90%
|-
| 1.20 * Life Expectancy || 80%
|-
| 1.50 * Life Expectancy || 50%
|}

As life expectancy is 80 for [[Human]]s, the following are approximate values for them.
{| class="wikitable"
|-
! Age !! Immunity Gain Speed 
|-
| <54 || 100%
|-
| 54 || 99%
|-
| 56 || 98%
|-
| 59 || 97%
|-
| 61 || 96%
|-
| 63 || 95%
|-
| 66 || 94%
|-
| 69 || 93%
|-
| 72 || 92%
|-
| 76 || 91%
|-
| 79 || 90%
|-
| 81 || 89%
|-
| 83 || 88%
|-
| 85 || 87%
|-
| 86 || 86%
|-
| 88 || 85%
|-
| 89 || 84%
|-
| 91 || 83%
|-
| 93 || 82%
|-
| 94 || 81%
|-
| 96 || 80%
|-
| 97 || 79%
|-
| 98 || 78%
|-
| 99 || 76%
|-
| 100 || 75%
|-
|}
Past age 100, it continues to gradually decrease until it hits 50% at age 120 and stays at 50% thereafter.

=== Misc ===
* [[Immunoenhancer]]: {{+|8%}} per, {{+|16%}} max
** This is mutually exclusive with [[Detoxifier kidney]]s
* [[Super-immune]] trait: {{+|30%}}
* [[Moral guide]]'s Preach Health ability {{IdeologyIcon}}: {{+|25%}}
* [[Genes#Strong immunity|Strong immunity]] gene {{BiotechIcon}}: {{+|10%}}
* [[Genes#Super immunity|Super Immunity]] gene {{BiotechIcon}}: {{+|50%}}
* [[Genes#Perfect immunity|Perfect immunity]] gene {{BiotechIcon}}: No effect, prevents most common disease but does not cure existing disease
* [[Genes#Inbred|Inbred]] gene {{BiotechIcon}}: {{Bad|x85%}}
* [[Genes#Mild cell instability|Mild cell instability]] gene {{BiotechIcon}}: {{Bad|x96%}}, {{Bad|x300%}} [[Cancer]] rate
* [[Genes#Major cell instability|Major cell instability]] gene {{BiotechIcon}}: {{Bad|x92%}}, {{Bad|x500%}} Cancer rate

== Version history ==
* [[Version/0.12.906|0.12.906]] - Now affected by [[room stats]]

{{nav|stats|wide}}