from the top of the world's list of most vaccinated countries, now ranking 47th, largely due to the 70 million americans who are not getting the shot. cbs' lilia luciano joins us with the latest in los angeles. >> reporter: good evening, jericka. there is concern and confusion tonight over exactly who is eligible for that third pfizer shot now that the c.d.c. says that includes people in high- risk jobs. eligible and eager americans are lining up this weekend to get their booster shot it is just for people 65 and older who already received pfizer shots and those at high risk of infection because of where they live or work. >> we made it possible for people to be eligible. but they really have to identify their own individual risk and their own individual benefit. and i recognize that this is confusing. >> reporter: u.s. covid deaths are at their highest level since march, hardest hit right now is alabama. sporting medical staff.