Experts say the Biden administration’s plan for booster shots could hinder the global fight against the pandemic

The only way to get to the global levels needed, says Andrew Noymer, epidemiologist [and associate professor of population health and disease prevention] at University of California, Irvine, is by making vaccines day and night, putting up more factories and training more people. “If we don’t vaccinate the whole world, this pandemic is just going to keep burning,” he adds. Neither Pfizer nor Moderna responded to a request to comment on whether they’re accelerating their vaccine production schedule.