new york announced five new confirmed cases. it has also been detected in california, minnesota and colorado. since omicron was first discovered by scientists in south africa, it has spread to at least two dozen countries. it is now the dominant strain in south africa where infections are spiking. the biden administration today launched a new campaign to get more americans a booster shot part of a strategy to manage a surge of delta infections already underway. cbs's weijia jiang leads off our coverage from the white house. good evening, weijia. >> good evening, margaret. tonight, we are learning that four of those new omicron cases are in new york city. still president biden is stressing that he does not believe shutdowns or lockdowns ntdark winrhead,ght now.he was o which health officials warn will include a surge in cases and deaths. >> my plan i'm announcing today pulls no punches in the fight