and the cdc is projecting that virus deaths will increase over the next four weeks. however, the number of fully vaccinated americans surpassed 200 million earlier this month, just over 60% of the population. in the past week, the doses being administered jumped 35% from the week before. but there are still millions who have not received a single dose, and many insist they are not going to. >> jacqueline howard with the latest on that we are seeing. >> john, health officials say they're concerned about what we could see this winter. they're concerned about a trio of illness. so we already have a delta wave right now. the delta variant causes the majority of covid-19 cases in the united states. then we have the emergence of the omicron variant. then we are seeing an increase in flu cases. delta, omicron, flu, that's where the concern is right now. when you look at the cdc's latest weekly flu report, the