Low-risk US teens to get jab, despite global need AFP, WASHINGTON US President Joe Biden wants 70 percent of US adults to have received at least one shot of a COVID-19 vaccine by the July 4 holiday, and has made vaccinating adolescents a key part of the next phase of the country’s immunization campaign. However, targeting US teens is a controversial move among many experts, who say that it is a serious mistake to use the world’s limited supply of doses on a low-risk population while the COVID-19 pandemic surges in countries such as India and Brazil. Pfizer and its partner BioNTech in March said that their two-dose regimen was shown to be safe and highly effective in a trial of 2,260 12-to-15-year-olds.