Biden speech on Covid-19 vaccination progress comes at a critical juncture

President Joe Biden on Thursday will address the progress his administration has made to reach his goal of getting 100 million coronavirus vaccines into the arms of Americans within his first 100 days in office, a White House official tells CNN.President Joe Biden on Thursday will address the progress his administration has made to reach his goal of getting 100 million coronavirus vaccines into the arms of Americans within his first 100 days in office, a White House official tells CNN.