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  "path": "/news/2026-06-immune-barrier-mrna-shots-struggle.html",
  "publishedAt": "2026-06-04T12:20:01.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "A consistent biological barrier that stops the immune system from making the antibodies most needed to protect the nose and throat from respiratory viruses has been identified. The discovery, led by researchers from the University of Surrey, in partnership with University College London, could guide the design of the next generation of vaccines built to protect at the point of infection.",
  "title": "Immune barrier may explain why mRNA shots struggle to block nasal infection"
}