I was exposed to swine flu at work, should I have my family leave my house for a couple days?

NO. You can isolate yourself from your family members within the same household. Cover mouth when coughing and sneezing, wash hands frequently and avoid contact if running fever. Me and my staff take "silver shield" from natures sunshine from health food store shuts down all viruses within 24-48 hrs by causing clumping of the viral RNA and preventing replication. Have not had flu in over 5 years.