Metraipolis › archive › dc_dbd445df5953

Breakthrough infection — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Breakthrough_infection
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-06T11:53:12.858Z
SHA-256 of the archived text: 7a7e4e3e0326c077a347f92986195f62b7f052846f646d8a604452d45ff7fe92
Stable URL of this page: https://metraipolis.com/documento/dc_dbd445df5953

How to cite

Breakthrough infection — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Breakthrough_infection (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_dbd445df5953 (Metraipolis archive dc_dbd445df5953, sha256 7a7e4e3e0326c077a347f92986195f62b7f052846f646d8a604452d45ff7fe92)

BibTeX

@misc{dcdbd445df5953,
  title = {Breakthrough infection — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Breakthrough_infection},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_dbd445df5953; sha256 7a7e4e3e0326c077a347f92986195f62b7f052846f646d8a604452d45ff7fe92},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Breakthrough_infection. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

A breakthrough infection is a case of illness in which a vaccinated individual becomes infected with the illness, because the vaccine has failed to provide complete immunity against the pathogen (currently only viruses). Breakthrough infections have been identified in individuals immunized against a variety of diseases including mumps, varicella (Chickenpox), influenza, and COVID-19. The characteristics of the breakthrough infection are dependent on the virus itself. Often, infection of the vaccinated individual results in milder symptoms and shorter duration than if the infection were contracted naturally. Causes of breakthrough infections include biological factors in the recipient, improper administration or storage of vaccines, mutations in viruses, blocking antibody formation, and other factors. For these reasons, vaccines are rarely 100% effective. A 2021 study found the common flu vaccine provided immunity to the flu in 58% of recipients. The measles vaccine fails to provide immunity to 2% of children that receive the vaccine. However, if herd immunity exists, it typically prevents individuals who are ineffectively vaccinated from contracting the disease. Accordingly, herd immunity reduces the number of breakthrough infections in a population.

Tema degli esploratori: scienze della vita e salute (deposito sistematico; categoria «Immunology»).
Fonte: Wikipedia in inglese, voce «Breakthrough infection» — https://en.wikipedia.org/wiki/Breakthrough_infection
Wikidata Q4959681: «infezione successiva a somministrazione di vaccino» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q4959681
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Breakthrough_infection?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1315899400, consultata il 2026-10-06T10:16:12.381Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 2c708b04e42356818d3b1be7e3ca8840b1ab9168062abd37d96d5ec3aa9e7cbc