Evidence map›Paper›PMID 30349332›Full record

ArticleInfection and drug resistance2018

Antiviral resistance markers in influenza virus sequences in Mexico, 2000-2017.

William Toledo-Rueda, Nora H Rosas-Murrieta, José E Muñoz-Medina, César R González-Bonilla, Julio Reyes-Leyva, Gerardo Santos-López

Open access · goldAbstract read
In one paragraph

Article in Infection and drug resistance, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

10 citing papers in PubMed, 17 citations in OpenAlex.

  1. Expansion of influenza A(H1N1)pdm09 NA:S247N viruses with reduced susceptibility to oseltamivir, Catalonia, Spain, and in Europe, July to October 2025.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
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  4. Exploring the Inhibitory Effect of AgBiSInternational journal of molecular sciences · 2023
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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 3 institutions in 2 countries.

William Toledo-RuedaLaboratory of Molecular Biology and Virology, Eastern Biomedical Research Center, Mexican Institute of Social Security, Metepec, Puebla, Mexico, gerardo.santos.lopez@gmail.com.
Nora H Rosas-MurrietaLaboratory of Biochemistry and Molecular Biology, Chemistry Center, Institute of Science, Autonomous University of Puebla, Puebla, Mexico.
José E Muñoz-MedinaDivision of Laboratories for Surveillance and Epidemiological Research, Coordination of Epidemiological Surveillance, Mexican Institute of Social Security, Mexico City, Mexico.
César R González-BonillaDivision of Laboratories for Surveillance and Epidemiological Research, Coordination of Epidemiological Surveillance, Mexican Institute of Social Security, Mexico City, Mexico.
Julio Reyes-LeyvaLaboratory of Molecular Biology and Virology, Eastern Biomedical Research Center, Mexican Institute of Social Security, Metepec, Puebla, Mexico, gerardo.santos.lopez@gmail.com.
Gerardo Santos-LópezLaboratory of Molecular Biology and Virology, Eastern Biomedical Research Center, Mexican Institute of Social Security, Metepec, Puebla, Mexico, gerardo.santos.lopez@gmail.com.
Mexican Social Security Institute · MXInstitute of Health Research, Epidemiological Surveillance and Training · SNBenemérita Universidad Autónoma de Puebla · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInfluenza causes high rates of morbidity and mortality. Genetic variability of influenza viruses generates resistance to antivirals, which are of two types, since they act on two different viral targets: adamantanes, which block the M2 ion channel, and the neuraminidase (NA) inhibitors.

methodsIn Mexico, the available studies on the antiviral resistance of circulating influenza strains are scarce, so this work undertook an analysis of the Mexican sequences reported in public gene banks to perform a systematic analysis of the antiviral resistance markers on both M2 and NA. In all, 284 M2 sequences and 423 NA sequences were retrieved from three genetic databases (sequences from 2000 to 2017 were considered).

resultsThe resistance markers to M2 blockers were present in 100% of H1N1 pdm2009, 83.6% of H3N2, and 5.8% of seasonal H1N1 sequences. Two resistance markers conferring resistance to NA inhibitors were present in seasonal H1N1 sequences, H275Y (50.0%) and N70S (33.3%). None of these viruses had both resistance markers, which are associated with oseltamivir resistance. The more frequent resistance marker in H1N1 pdm2009 NA sequences was H275Y, present in 3.6%, while S247N was present in 0.30%. Only one of the resistance-associated markers (Q136K) in NA (1.5%) was present in the analyzed H3N2 sequences, while sequences of influenza B virus did not present resistance markers to NA inhibitors. Some influenza A H1N1 pdm2009 sequences (1.8%) presented resistance markers to both M2 and NA.

conclusionBased on the present analysis, 7.1% of the all serotypes of influenza virus A sequences analyzed in Mexico from 2000 to 2017 have mutations conferring resistance to NA inhibitors. Because of this, and the limited availability of influenza drugs, it is necessary to increase the epidemiological surveillance, including molecular analysis, which will provide data such as the presence of changes associated with antiviral resistance.

Indexed as

drug resistanceinfluenza A virusM2 blockersneuraminidase inhibitorsosel-tamivirzanamivir

Identifiers

PMID30349332
PMCPMC6188218
OpenAlexW2897580016

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.