lockdowns. welcome to the lead. i m jake tapper. we begin with the health lead and the first real signs that existing vaccines might protect against the new omicron variant of coronavirus. pfizer today revealing new lab research that finds three doses of its vaccine will provide even better protection. a 25-field increase in antibody levels compared to just two doses. president biden calling the announcement encouraging. the lab report, there s more studies going on but that s very, very encouraging. right now about 72% of the adult u.s. population is vaccinated. only about a quarter, however, have received a booster shot. and as alexandra field reports for us now, that number will surely have to tick up as omicron spreads into 21 states. to be protected of omicron, you really need three-dose series of vaccination. reporter: promising news from pfizer on the efficacy of its vaccine against the omicron variant based on early data. three doses against omicron are
respectfully, i don t think you can take one or two examples and indicate that s indicative of what happens on the platform more broadly. reporter: pledging the company will do more to protect young users but it s too little, too late for people like ian russell who lost his daughter molly to suicide in 2017. there was no sign of any mental ill health in molly before her death. we couldn t work out what could possibly trigger it. reporter: russell says he looked at his daughter s social media and was disturbed by what he saw on platforms including instagram. having had a glimpse of what she was exposed to, i think i now understand why she was pushed to do what she did. reporter: adding to the pressures on the social media giant a bipartisan group of state attorneys general launched an investigation into the potential harms of instagram for children and teens. meta claiming the allegations are false. and that hearing just ending on capitol hill in the last few seco
FRANCES HAUGEN (pictured) reveals how she secretly copied 22,000 files on her phone to
expose how the tech giant puts its craving for growth above all else.