Midi-chlorian virus (Earth-2356)

The midi-chlorian virus is a very dangerous and rare virus that affects a Force-sensitive's ability to mould the Force, turning their own midi-chlorians into fever. For this reason, Jedi were very afraid of it.

A village that Anakin Skywalker visited after the Coruscant Crush was infected by this virus, so Anakin was considered infected too. This was later discovered to be incorrect.

Source

 * https://naruto.fandom.com/wiki/Chakra_Virus.