Dr. Fauci on delta variant, breakthrough infections, masks

COVID-19 cases, hospitalizations and deaths are rising again in the United States. The Centers for Disease Control and Prevention has labeled it a "pandemic of the unvaccinated," warning of the delta variant. President Joe Biden also warned Monday to beware of misinformation. Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, joins Judy Woodruff to discuss.