# @science on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/DMt4bAbShDm
- **Gondola URL:** https://gondola.cc/posts/32843530-science-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/a10f9d2ac8.jpg
- **Posted:** 2025-07-30T03:30:20.000+00:00
- **Account Owner:** Science 🧬 (@science) — https://gondola.cc/science

## Caption

Your next vaccine may not come in a syringe—it might arrive on a piece of dental floss.⁠
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In a groundbreaking study, scientists demonstrated that coating dental floss with inactivated virus particles and applying it along the gumline can trigger a powerful immune response. Targeting the junctional epithelium—a thin, leaky layer of tissue where gums meet teeth—researchers vaccinated lab mice against the flu. The flossing technique offered full protection from infection, activating antibodies not just in the bloodstream but also in mucosal surfaces like the lungs, nose, saliva, and even feces.⁠
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That dual response is critical. Mucosal surfaces are where most pathogens enter the body, yet traditional injected vaccines rarely reach them. In contrast, this floss-based method stimulated robust immunity across both systemic and mucosal tissues, offering layered protection. The mice showed elevated T cells, stronger lymph nodes, and antibody-producing cells in their spleens and bone marrow, indicating long-lasting defense.⁠
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Equally remarkable, food and water consumption immediately after vaccination didn’t weaken the immune response, suggesting flexibility for real-world use. In human trials, 27 participants used floss picks coated with food dye, and 60% of applications successfully delivered the dye to the gum pockets. This suggests the method could be adapted for home use, even mailed during pandemics.⁠
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Researchers also tested other vaccine types—including mRNA, protein, and inactivated virus platforms—and found similarly strong responses. Unlike nasal vaccines, which risk delivery to the brain, this method poses fewer safety concerns and may work for a broader range of formulations.⁠
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Needle-free, cold chain-free, and potentially self-administered, floss-based vaccination could transform global immunization. A daily habit might one day double as a public health revolution.⁠
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#vaccines #nanomedicine #immunology #dentalresearch #flutech #biomedicalengineering #needlefree #publichealth #science

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## Tags

publichealth, science, immunology, needlefree, dentalresearch, nanomedicine, flutech, biomedicalengineering, vaccines

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