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  "path": "/news/2026-05-covid-mrna-vaccine-immune-boosters.html",
  "publishedAt": "2026-05-22T05:00:04.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "In a new study published in Nature Immunology, researchers at Boston Children's Hospital demonstrated that pairing the original COVID-19 mRNA vaccine with an immune system enhancer, known as an adjuvant, improved the duration of the vaccine's protection in mice. The combo also showed a more pronounced response against omicron viral components than the vaccine alone.",
  "title": "COVID-19 mRNA vaccine plus immune system enhancer may reduce need for repeated boosters, say researchers"
}