Christopher Ridley, a spokesperson for Moderna, said the state legislative efforts are largely a product of “misunderstandings” about how the technology works and its safety profile. A bill in Idaho describes the vaccines as a “human gene therapy product,” an inaccurate label since the shots don’t alter human DNA.

The National Institutes of Health is terminating dozens of studies examining why people are hesitant about vaccines and how to increase uptake.

Some of terminated grants focused on boosting uptake in minority populations, with the cuts covering a range of vaccines.