Rashi on II Kings
There were four men. Geichazi and his sons.1See Maseches Sanhedrin 107b. 2These four were the only people suffering from tzora’as. Elisha had healed all other Bnei Yisroel suffering from tzora’as.—Malbim
Malbim on II Kings
The questions: Why does it say people who are metzoraim were outside the gate?