Evidence map›Paper›PMID 34696412›Full record

ArticleViruses2021

Measles in Vaccinated People: Epidemiology and Challenges in Surveillance and Diagnosis in the Post-Elimination Phase. Spain, 2014-2020.

Noemí López-Perea, Aurora Fernández-García, Juan Emilio Echevarría, Fernando de Ory, Mayte Pérez-Olmeda, Josefa Masa-Calles

Open access · goldAbstract read
In one paragraph

Article in Viruses, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Article
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  7. Article
  8. Article
  9. The Effects of Vaccination Status and Age on Clinical Characteristics and Severity of Measles Cases in the United States in the Postelimination Era, 2001-2022.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Increase in measles cases in a City hospital, Istanbul, Turkey.Central European journal of public health · 2024
    Article
  14. Adapting response to a measles outbreak in a context of high vaccination and breakthrough cases: an example from Vaud, Switzerland, January to March 2024.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2024
    Article
  15. Article
  16. Article
  17. Article
  18. An interregional measles outbreak in Spain with nosocomial transmission, November 2017 to July 2018.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2023
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Noemí López-PereaCentro Nacional de Epidemiología, Instituto de Salud Carlos III (ISCIII), Av. Monforte de Lemos 5, 28029 Madrid, Spain.
Aurora Fernández-GarcíaCIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Av. Monforte de Lemos 5, 28029 Madrid, Spain.ORCID 0000-0002-7504-5321
Juan Emilio EchevarríaCIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Av. Monforte de Lemos 5, 28029 Madrid, Spain.ORCID 0000-0001-7522-850X
Fernando de OryCIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Av. Monforte de Lemos 5, 28029 Madrid, Spain.
Mayte Pérez-OlmedaCentro Nacional de Microbiología, Instituto de Salud Carlos III (ISCIII), Ctra. Majadahonda-Pozuelo s/n, 28220 Madrid, Spain.ORCID 0000-0003-4553-5423
Josefa Masa-CallesCentro Nacional de Epidemiología, Instituto de Salud Carlos III (ISCIII), Av. Monforte de Lemos 5, 28029 Madrid, Spain.ORCID 0000-0002-2725-417X
Instituto de Salud Carlos III · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The MMR vaccination program was introduced in Spain in 1981. Consistently high vaccination coverage has led to Spain being declared free of endemic measles transmission since 2014. A few imported and import-related cases were reported during the post-elimination phase (2014 to 2020), with very low incidence: three cases per million of inhabitants a year, 70% in adults. In the post-elimination phase an increasing proportion of measles appeared in two-dose vaccinated individuals (up to 14%), posing a challenge to surveillance and laboratory investigations. Severity and clinical presentation were milder among the vaccinated. The IgM response varied and the viral load decreased, making the virus more difficult to detect. A valid set of samples (serum, urine and throat swab) is strongly recommended for accurate case classification. One third of measles in fully vaccinated people was contracted in healthcare settings, mainly in doctors and nurses, consistent with the important role of high intensity exposure in measles breakthrough cases. Surveillance protocols and laboratory algorithms should be adapted in advanced elimination settings. Reinforcing the immunity of people working in high exposure environments, such as healthcare settings, and implementing additional infection control measures, such as masking and social distancing, are becoming crucial for the global aim of measles eradication.

Indexed as

AdolescentChildChild, PreschoolDisease OutbreaksEpidemiological MonitoringFemaleHumansInfantInfant, NewbornMaleMeaslesMeasles VaccineMeasles virusMorbillivirusSpainVaccinationMeasles Vaccineeliminationhealthcare workersmeaslesnosocomial transmissionsurveillancevaccinationvaccine failurewaning immunity

Identifiers

PMID34696412
PMCPMC8537497
OpenAlexW3203851119

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.