Pokérus: Difference between revisions

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[[File:Pokerus screenshot RSE.png|thumb|right|260px|A player being told their Pokémon has caught Pokérus]]
The '''Pokérus''' (Japanese: '''ポケルス''' ''Pokérus''), from "Pokémon virus", is a microscopic life-form that may attach to {{OBP|Pokémon|species}}, first appearing in the [[Generation II]] {{pkmn|games}}.  
The '''Pokérus''' (Japanese: '''ポケルス''' ''Pokérus''), from "Pokémon virus", is a microscopic life-form that may attach to {{OBP|Pokémon|species}}, first appearing in the [[Generation II]] {{pkmn|games}}.  
[[File:Pokerus screenshot RSE.png|thumb|right|245×137px|A player being told their Pokémon has caught Pokérus]]


==In the games==
==In the games==
<!---Do the nurse's comments differ between DPPt and HGSS?--->
<!--Do the nurse's comments differ between DPPt and HGSS?-->
Unlike other [[status ailment]]s, Pokérus cannot be healed at a [[Pokémon Center]] or with any [[status ailment healing item]], and can only be obtained by the Pokémon in question once. When a Pokémon has the Pokérus, it gains double the [[effort values]] from battling (i.e., fighting a {{p|Magikarp}} will give two {{stat|Speed}} EVs, rather than one). Effort points gained from [[vitamins]] and [[wings]] are not doubled. The infected Pokémon can infect other Pokémon with the virus for a period of about two days. However, the Pokérus timer can be delayed by several methods including placing the infected Pokémon in a PC Box.
Unlike other [[status ailment]]s, Pokérus cannot be healed at a [[Pokémon Center]] or with any [[status ailment healing item]], and can only be obtained by the Pokémon in question once. When a Pokémon has the Pokérus, it gains double the [[effort values]] from battling (i.e., fighting a {{p|Magikarp}} will give two {{stat|Speed}} EVs, rather than one). Effort points gained from [[vitamins]] and [[wings]] are not doubled. The infected Pokémon can infect other Pokémon with the virus for a period of about two days. However, the Pokérus timer can be delayed by several methods including placing the infected Pokémon in a PC Box.


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This means that there exist 256 possible states of Pokérus: 1 unaffected state, 240 infected states (39 legitimate and 201 hacked), 15 cured states:
This means that there exist 256 possible states of Pokérus: 1 unaffected state, 240 infected states (39 legitimate and 201 hacked), 15 cured states:
* An unaffected state is always represented as 0. (hex 00)
* An unaffected state is always represented as 0 (hex 00).
* An infected state is represented by any number between 1 and 255 that has a remainder when divided by 16.
* An infected state is represented by any number between 1 and 255 that has a remainder when divided by 16.
** For example, 33 (hex 21) represents an infected state, since 33 divided by 16 would produce 1 as a remainder.
** For example, 33 (hex 21) represents an infected state, since 33 divided by 16 would produce 1 as a remainder.
* A cured state is represented by any number between 1 and 255 that does not have a remainder when divided by 16.
* A cured state is represented by any number between 1 and 255 that does not have a remainder when divided by 16.
** Possible 'cured' values can be 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224 or 240. (hex values 10, 20, 30, 40, 50, 60, 70, 80, 90, A0, B0, C0, D0, E0 or F0 respectively)
** Possible 'cured' values can be 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224 or 240 (hex values 10, 20, 30, 40, 50, 60, 70, 80, 90, A0, B0, C0, D0, E0 or F0 respectively).


=====Remaining days=====
=====Remaining days=====
Whenever the game's internal clock strikes midnight, every Pokémon in the player's party has their Pokérus value decreased by one point. Once the '''Y''' value reaches 0, the Pokémon will be cured of Pokérus.<br>
Whenever the game's internal clock strikes midnight, every Pokémon in the player's party has their Pokérus value decreased by one point. Once the '''Y''' value reaches 0, the Pokémon will be cured of Pokérus.<br>
For example, if a given Pokémon's Pokérus value was 65 (hex 41), it would decrease down to 64 (hex 40) and therefore be cured. However, if the value was 82 (hex 52), it would instead decrease down to 81. (hex 51) This means that if consistently left in the player's party, it is possible for a Pokémon to remain infected with Pokérus for a potential maximum of 15 days.
For example, if a given Pokémon's Pokérus value was 65 (hex 41), it would decrease down to 64 (hex 40) and therefore be cured. However, if the value was 82 (hex 52), it would instead decrease down to 81 (hex 51). This means that if consistently left in the player's party, it is possible for a Pokémon to remain infected with Pokérus for a potential maximum of 15 days.


=====Specific strain=====
=====Specific strain=====
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For example, if a Pokémon has a Pokérus value of 50, (hex 32) meaning it has strain 3 and will be cured in 2 more days. If it were to infect another Pokémon, the new Pokémon would obtain the Pokérus value of 52, (hex 34) meaning it would instead be cured in 4 more days. The strain remains constant when copied over. The remaining number of days prior to being cured however, depends on the strain itself.
For example, if a Pokémon has a Pokérus value of 50 (hex 32), meaning it has strain 3 and will be cured in 2 more days. If it were to infect another Pokémon, the new Pokémon would obtain the Pokérus value of 52 (hex 34), meaning it would instead be cured in 4 more days. The strain remains constant when copied over. The remaining number of days prior to being cured however, depends on the strain itself.


Currently, there is no known way to determine how specific strain are generated by the game. (Other than the fact that there is a 3 in 65,536 chance of a wild Pokémon carrying Pokérus) However one of these 16 strain is illegitimate: Strain 0. This is because when Pokérus values between 1 through 15 (hexadecimals 01 through 0F) eventually decrease down to 0 (hexadecimal 00), a Pokémon would not only be cured of Pokérus, but would also lose any sign of having been infected in the first place - meaning that they could become reinfected at a later point in time.
Currently, there is no known way to determine how specific strain are generated by the game (other than the fact that there is a 3 in 65,536 chance of a wild Pokémon carrying Pokérus). However one of these 16 strain is illegitimate: Strain 0. This is because when Pokérus values between 1 through 15 (hexadecimals 01 through 0F) eventually decrease down to 0 (hexadecimal 00), a Pokémon would not only be cured of Pokérus, but would also lose any sign of having been infected in the first place—meaning that they could become reinfected at a later point in time.


As a result, out of the 240 possible states of Pokérus infection, only 39 of them are considered legitimate. This can be calculated by adding up all of the 15 legitimate strains and multiplying each of them by the possible number of remaining infected days. (2 + 3 + 4 + 1 + 2 + 3 + 4 + 1 + 2 + 3 + 4 + 1 + 2 + 3 + 4 = 39)
As a result, out of the 240 possible states of Pokérus infection, only 39 of them are considered legitimate. This can be calculated by adding up all of the 15 legitimate strains and multiplying each of them by the possible number of remaining infected days (2 + 3 + 4 + 1 + 2 + 3 + 4 + 1 + 2 + 3 + 4 + 1 + 2 + 3 + 4 = 39).


====Erasing Pokérus from a Pokémon====
====Erasing Pokérus from a Pokémon====
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===In Generation III===
===In Generation III===
The Pokérus operates in much the same way as in Generation II, though it can infect {{pkmn|Egg}}s too. Also, it can only be contracted or cured in {{3v2|Ruby|Sapphire|Emerald}}. In {{2v2|FireRed|LeafGreen}}, as well as {{pkmn|Colosseum}} and {{Pokémon XD}}, since the [[time]] function is absent, and a Pokémon with Pokérus will keep it indefinitely (it can't spread Pokérus, either) <!-- at least FRLG!-->, until it is transferred to the [[Hoenn]]-based games. The Pokérus icon is [[File:PokérusIC III.png]].
The Pokérus operates in much the same way as in Generation II, though it can infect {{pkmn|Egg}}s too. Also, it can only be contracted or cured in {{3v2|Ruby|Sapphire|Emerald}}. In {{2v2|FireRed|LeafGreen}}, as well as {{pkmn|Colosseum}} and {{Pokémon XD}}, since the [[time]] function is absent, and a Pokémon with Pokérus will keep it indefinitely (it can't spread Pokérus, either) <!-- at least FRLG!-->, until it is transferred to the [[Hoenn]]-based games. The Pokérus icon is [[File:PokérusIC III.png]].
====Nurse's comments====
====Nurse's comments====
"''Your <sc>Pokémon</sc> may be infected with <sc>Pokérus</sc>.<br>Little is known about the <sc>Pokérus</sc> except that they are microscopic life-forms that attach to <sc>Pokémon</sc>.<br>While infected, <sc>Pokémon</sc> are said to grow exceptionally well.''"
"''Your <sc>Pokémon</sc> may be infected with <sc>Pokérus</sc>.<br>Little is known about the <sc>Pokérus</sc> except that they are microscopic life-forms that attach to <sc>Pokémon</sc>.<br>While infected, <sc>Pokémon</sc> are said to grow exceptionally well.''"
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If he is called back, he will claim that Pokémon will level up better with the Pokérus while infected. The Pokérus icon is [[File:PokérusIC.png]].
If he is called back, he will claim that Pokémon will level up better with the Pokérus while infected. The Pokérus icon is [[File:PokérusIC.png]].
====Nurse's comments====
====Nurse's comments====
"''Your Pokémon may be infected with the Pokérus.<br>Little is known about the Pokérus except that they are microscopic life-forms that attach to Pokémon.<br>While infected, Pokémon are said to grow exceptionally well.''"
"''Your Pokémon may be infected with the Pokérus.<br>Little is known about the Pokérus except that they are microscopic life-forms that attach to Pokémon.<br>While infected, Pokémon are said to grow exceptionally well.''"
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==Trivia==
==Trivia==
* Pokérus is an example of a mutualistic virus (while seemingly oxymoronic, a "virus" is classified by infecting cells, rather than negative effects), in which both host and virus benefit. Viruses with possible positive effects exist in the real world <ref>http://www.nature.com/nature/journal/v447/n7142/full/nature05762.html</ref>, but all of Pokérus's known effects are objectively positive. A notable difference between biological viruses and the Pokérus is that biological viruses infect a host cell by mutating the cell's DNA. Pokérus only affects the host Pokémon's [[effort values]], not the host's [[individual values]], which are regarded as the Pokémon analogue to DNA.
* Pokérus is an example of a mutualistic virus (while seemingly oxymoronic, a "virus" is classified by infecting cells, rather than negative effects), in which both host and virus benefit. Viruses with possible positive effects exist in the real world <ref>http://www.nature.com/nature/journal/v447/n7142/full/nature05762.html</ref>, but all of Pokérus's known effects are objectively positive. A notable difference between biological viruses and the Pokérus is that biological viruses infect a host cell by mutating the cell's DNA. Pokérus only affects the host Pokémon's [[effort values]], not the host's [[individual values]], which are regarded as the Pokémon analogue to DNA.
* Using a trend called the [[Magnemite]] Chain/Coil (where Trainers use the [[GTS]] to trade Magnemite in order to increase visitors to their [[Join Avenue]] in {{2v2|Black|White|2}}) a new trend is starting where Trainers are using the Magnemite chain to spread the Pokérus to other Trainers.
* Using a trend called the {{p|Magnemite}} Chain/Coil (where Trainers use the [[GTS]] to trade Magnemite in order to increase visitors to their [[Join Avenue]] in {{2v2|Black|White|2}}) a new trend is starting where Trainers are using the Magnemite chain to spread the Pokérus to other Trainers.


==References==
==References==
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{{Project Games notice|game mechanic}}
{{Project Games notice|game mechanic}}
[[Category:Game mechanics]]
[[Category:Game mechanics]]