California expands its quarantine as U.S. deals with worst measles outbreak since 2000

Summary: State and local officials are taking strong steps in response to the largest U.S. measles outbreak since 2000. In California, staff and students at UCLA and California State-Los Angeles were required to stay home after an outbreak there. Dr. Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases, joins Judy Woodruff to discuss how to achieve measles immunity.