The Poké Virus is a status condition that can be contracted by Pokémon through contact with certain wild Pokémon, such as the Grimer in the Goldenrod City Game Corner. It lowers the affected Pokémon's stats and can cause them to faint more easily.
Here's what you can do if your Pokémon gets the Poké Virus:
* Avoid further contact with infected Pokémon: This is the most important step to prevent the virus from spreading to other Pokémon in your party.
* Use a Cleanse Tag: This item, which can be found at the Goldenrod Game Corner, will remove the Poké Virus from one Pokémon. However, Cleanse Tags are rare and difficult to obtain.
* Wait it out: The Poké Virus eventually goes away on its own, but it can take a long time.
It's important to note that the Poké Virus is not harmful in the long run. It doesn't affect a Pokémon's ability to learn moves or evolve, and it doesn't permanently reduce their stats. It's mainly just a nuisance.