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Why We Can't Make Vaccine Doses Any Faster
The Trump administration deployed the Defense Production Act last year to give vaccine manufacturers priority in accessing crucial production supplies before anyone else could buy them. And the Biden administration used it to help Pfizer obtain specialized needles that can squeeze a sixth dose from the company’s vials, as well as for two critical manufacturing components: filling pumps and tangential flow filtration units. The pumps help supply the lipid nanoparticles that hold and protect the mRNA — the vaccines’ active ingredient, so to speak — and also fill vials with finished vaccine. The filtration units remove unneeded solutions and other materials used in the manufacturing process.
These highly precise pieces of equipment are not typically available on demand, said Matthew Johnson, senior director of product management at Duke University’s Human Vaccine Institute, who works on developing mRNA vaccines, but not for COVID-19. “Right now, there is so much growth in biopharmaceuticals, plus the pinch of the pandemic,” he said. “Many equipment suppliers are sold out of production, and even products scheduled to be made, in some cases, sold out for a year or so looking forward.”