“Pfizer and Moderna are midway through clinical trials, and the public health system is well versed in delivering childhood shots. The challenge? Politics.”


“Despite Covid vaccines being subjected to politicized controversy, the trials in younger children haven’t had any difficulty recruiting kids. “We had far more people interested than we have spaces,” says Kawsar Rasmy Talaat, a physician and associate professor of international health at the Johns Hopkins Bloomberg School of Public Health, where she leads a trial of the Pfizer vaccine for kids 12 and under. “Before we even knew we were a site, we had names on a list, parents who said, ‘If you do this, I want my kid to be in the study’—hundreds and hundreds of names.”