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go fight, win. go fight, win. ♪ >> reporter: and even though the entire cheer squad is here to support people, i have to mention in talking to those girls, only about half of them have gotten a shot. the other half are still hesitant. one of them told me she is scared to get the vaccine even with family members who have had covid in the past year, and that is just an example of some of the hesitancy that health officials here in alabama and around the country are battling. >> it's coming for us, it's a beast. that's what we're seeing in the hospital. that's why we're nervous. >> reporter: the warning comes from a louisiana doctor who is a voice among many raising the alarm about what is now again a growing number of covid cases in the u.s. the number of cases are on the rise in all 50 states. >> the bottom line is we are dealing with a formidable variant in the delta variant as reflected by the data and the