Dr. Kauffman calls it an epidemic of mass hysteria.
4 seconds sound clip from the Invasion of the Body Snatchers (1956) movie soundboard.
You can hear this line at 00:23:11.706 in the Blu-ray version of the movie.
Quote context
[...]
- Miles, don't you think we should we call the police, and have them take that dead body out of here?
- I'm afraid it isn't just a dead body.
- What?
- I wonder if there's any connection.
- There's something strange going on in Santa Mira.
- Dr. Kauffman calls it an epidemic of mass hysteria.
- Becky's cousin's got it for one.
- She thinks that her uncle and her aunt aren't her uncle and her aunt.
- There's several cases of such delusion.
- Now this isn't you yet, but there is a structural likeness.
[...]