Too Long; Didn't Read
Confidence in the COVID-19 vaccines has held firm in America, but it is reaching a plateau. If the US wants to reach herd immunity with 70 to 85% of their population inoculated, then between 10 and 15% of the population needs to change its mind about getting the shot. The main factor separating people who are likely to vaccinate from those who are hesitant is political affiliation. The two main reasons vaccine holdouts cite for their hesitancy are freedom of choice and concern for side effects.