[Ozzie learns that Harriet took Ricky to the doctor to get a shot]
Ozzie Nelson: I thought Ricky just had a shot a little while ago.
Harriet Nelson: Oh, this wasn't a booster shot. He didn't feel very good when he came home from school today, so I took him over to see Doctor Williams.
Ozzie Nelson: Oh, gee, that's a shame. What'd he say?
Harriet Nelson: Well, he thinks he might have picked up some sort of a virus.
Ozzie Nelson: Oh, gosh. What makes him so sure it's a virus?
Harriet Nelson: Well, I don't know. But he's got a very nice office, and two nurses, and all the latest magazines to read, so I guess he knows what he's talking about.