All the information about Pokérus?

Question

I'm not that much of a pro in Pokémon. And probably most people on here should know the answer. But, I wanna learn more about Pokérus for today. I would rather get all the information about it. So that means do not answer/comment this if you don't know every fact about it.
All the information could be(or more if you got some more facts about it):

• How long does it last (minimum and maximum days)
• how much extra stats does it give
• what is the most easy way for getting it
• what is the chance for getting it
• are only some type of Pokémon allowed (like maybe Legendaries can't have it, non shinies can't have it, or something like that)
• is it allowed in a battle
• does it do bad things for your Pokémon
• when was the release of Pokérus
• how many other Pokémon could get affected by Pokérus
• what is the fastest method to get a Pokérus Pokémon
• how do you heal it at the first day
• did I even spell this right? (:P)

If some questions aren't answerable just type '/'.

That's all.
SeeYaLater!

Answer 1

• It lasts a few days, I’d say generally 2-4
• It doesn’t give extra stats, it doubles your EV gain
• Getting it from someone that already has pokerus because they can just spread it easily (I can give you a pokerus mon if you want). Wonder Trade works too, but a lot of stuff on Wonder Trade is hacked so I wouldn’t recommend that
• 3 in 65,536 chance
• No
• Yes, but it doesn’t do anything besides increasing EV gains, which only take effect before or after the battle takes place
• No
• In gen 2
• There)s no linit
• Idk what you mean by that
• You can’t
• Yes

I answered all your questions in order

Comments

Ph sorry some error came there. I meant, what is the fastest method for getting one?

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Catch every Pokemon until you find one with Pokerus. Or ask someone to trade one to you.

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Wow...

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I have a lot of them. Do you want any?