The Fortnite parasite is currently on the heads of animals roaming on the map. So, to find one, look out for Wolf, Boar, and Chicken. Just listen to the sounds of animals, and when you find some, you need to kill the host animal to release the parasites. Be careful not to hit the parasite, because you can kill it in the process.
You can also find alien parasites waiting to hatch from Fortnite alien eggs in these locations, as shown below:
Fortnite alien parasite uses
Fortnite alien parasites will immediately consume your health to 60 leaving your shield unaffected. However, in return, you will be protected from headshot damage and the ability to run faster and jump higher. Therefore, it is up to you whether you are willing to take risks.
How to get rid of Fortnite parasite
Once the Fortnite alien parasite is trapped on your head, you have a few options to remove it- jumping into the water is the easiest and best option, or you can also enter into a dumpster or Porta-Potties. Other options are to set yourself on fire or get enough damage so that the parasite jump out.