The shelving of the mRNA projects is short-sighted as concerns about a bird flu pandemic continue to loom, said Dr. Paul Offit, a vaccine expert at Children’s Hospital of Philadelphia. It’s certainly saved millions of lives,” Offit said of the existing mRNA vaccines. Scientists are using mRNA for more than infectious disease vaccines, with researchers around the world exploring its use for cancer immunotherapies. At the White House earlier this year, billionaire tech entrepreneur Larry Ellison praised mRNA for its potential to treat cancer.
Traditionally, vaccines have required growing pieces of viruses, often in chicken eggs or giant vats of cells, then purifying that material. The mRNA approach starts with a snippet of genetic code that carries instructions for making proteins. Scientists pick the protein to target, inject that blueprint and the body makes just enough to trigger immune protection — producing its own vaccine dose.
In a statement Tuesday, HHS said “other uses of mRNA technology within the department are not impacted by this announcement.” The mRNA technology is used in approved
COVID-19 and
RSV shots, but has not yet been approved for a flu shot. Moderna,
which was studying a combination COVID-19 and flu mRNA shot, had said it believed mRNA could speed up production of flu shots compared with traditional vaccines.