From his appearance, I'd say that he doesn't have any infection, in which case you've had a narrow escape.
8 seconds sound clip from the The Bat (1959) movie soundboard.
You can hear this line at 00:28:36.843 in the Blu-ray version of the movie.
Quote context
[...]
- Your servants must have sensed it when they walked out on you, an apprehension of disaster.
- Well, let's see. Ah-ha! Yes, there he is.
- All right now, take it easy, nobody's going to hurt you, quiet now, quiet.
- He looks quite normal, doesn't seem to be sick at all.
- Ain't that nice. I've been worried about him.
- Oh, thanks for everything, doctor.
- Now don't worry. I can find my way out.
- Oh, I know you can. But do let me help you.
- Oh, don't forget that once I'm gone, you'll have to climb those stairs alone.
- Oh, I'm all right. I'm armed now.
[...]