Evidence map›Paper›PMID 19394063›Full record

ArticleVirology2009

The origin and global emergence of adamantane resistant A/H3N2 influenza viruses.

Martha I Nelson, Lone Simonsen, Cécile Viboud, Mark A Miller, Edward C Holmes

Open access · greenAbstract read
In one paragraph

Article in Virology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 1 pooled it
7.2field-weighted citation impact, top 2% 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

61 citing papers in PubMed, 1 synthesis or guideline pooled it, 112 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Understanding Influenza.Methods in molecular biology (Clifton, N.J.) · 2025
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Antiviral Approaches against Influenza Virus.Clinical microbiology reviews · 2023
    Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Review

1 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 1 country.

Martha I NelsonFogarty International Center, National Institutes of Health, Bethesda, MD 20892, USA. nelsonma@mail.nih.gov
Lone Simonsen
Cécile Viboud
Mark A Miller
Edward C Holmes
National Institutes of Health · USGeorge Washington University · US

Funding

Intramural NIH HHS Z99 TW999999
6 · The paper itself

Abstract

Resistance to the adamantane class of antiviral drugs by human A/H3N2 influenza viruses currently exceeds 90% in the United States and multiple Asian countries. Adamantane resistance is associated with a single amino acid change (S31N) in the M2 protein, which was shown to rapidly disseminate globally in 2005 in association with a genome reassortment event. However, the exact origin of influenza A/H3N2 viruses carrying the S31N mutation has not been characterized, particularly in South-East Asia. We therefore conducted a phylogenetic analysis of the HA, NA, and M1/2 segments of viral isolates collected between 1997 and 2007 from temperate localities in the Northern hemisphere (New York State, United States, 492 isolates) and Southern hemisphere (New Zealand and Australia, 629 isolates) and a subtropical locality in South-East Asia (Hong Kong, 281 isolates). We find that although the S31N mutation was independently introduced at least 11 times, the vast majority of resistant viruses now circulating globally descend from a single introduction that was first detected in the summer of 2003 in Hong Kong. These resistant viruses were continually detected in Hong Kong throughout 2003-2005, acquired a novel HA through reassortment during the first part of 2005, and thereafter spread globally. The emergence and persistence of adamantane resistant viruses in Hong Kong further supports a source-sink model of global influenza virus ecology, in which South-East Asia experiences continuous viral activity and repeatedly seeds epidemics in temperate areas.

Indexed as

AdamantaneAmino Acid SubstitutionAntiviral AgentsDrug Resistance, ViralHemagglutinin Glycoproteins, Influenza VirusHumansInfluenza A Virus, H3N2 SubtypeInfluenza, HumanPhylogenySequence Analysis, DNAViral Matrix ProteinsViroporin ProteinsAdamantaneAntiviral AgentsHemagglutinin Glycoproteins, Influenza VirusM2 protein, Influenza A virusViral Matrix ProteinsViroporin Proteins

Identifiers

PMID19394063
PMCPMC2705899
OpenAlexW1973503801

What OpenQuestion holds

Textmetadata
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.