Rochelle Walensky September 24, 2021 5:13 pm CDC Head Endorses Pfizer Booster for High-Risk Individuals CDC Director Rochelle Walensky spoke Friday about her decision to endorse Pfizer booster shots for individuals working in high risk environments. US & World Videos 2:09 President of MIT calls for shutting down pro-Palestinian encampments 3:57 Pleasant Sunday despite morning showers 1:00 Three dead in apparent murder-suicide in Lowell 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger