Evidence map›Paper›PMID 9990079›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1999

Origin and evolution of the 1918 "Spanish" influenza virus hemagglutinin gene.

A H Reid, T G Fanning, J V Hultin, J K Taubenberger

Open access · greenAbstract readCase ReportsHistorical Article
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 240 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
240citing papers in PubMed, 2 pooled it
21.5field-weighted citation impact, top 1% 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

240 citing papers in PubMed, 2 syntheses or guidelines pooled it, 605 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Influenza.Nature reviews. Disease primers · 2026
    Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Buffered Lugol's Iodine Preserves DNA Fragment Lengths.Integrative organismal biology (Oxford, England) · 2024
    Article
  16. An Adagio for Viruses, Played Out on Ancient DNA.Genome biology and evolution · 2023
    Review
  17. Article
  18. Article
  19. Article
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

A H ReidDivision of Molecular Pathology, Department of Cellular Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000, USA. reid@afip.osd.mil
T G Fanning
J V Hultin
J K Taubenberger
Armed Forces Institute of Pathology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The "Spanish" influenza pandemic killed over 20 million people in 1918 and 1919, making it the worst infectious pandemic in history. Here, we report the complete sequence of the hemagglutinin (HA) gene of the 1918 virus. Influenza RNA for the analysis was isolated from a formalin-fixed, paraffin-embedded lung tissue sample prepared during the autopsy of a victim of the influenza pandemic in 1918. Influenza RNA was also isolated from lung tissue samples from two additional victims of the lethal 1918 influenza: one formalin-fixed, paraffin-embedded sample and one frozen sample obtained by in situ biopsy of the lung of a victim buried in permafrost since 1918. The complete coding sequence of the A/South Carolina/1/18 HA gene was obtained. The HA1 domain sequence was confirmed by using the two additional isolates (A/New York/1/18 and A/Brevig Mission/1/18). The sequences show little variation. Phylogenetic analyses suggest that the 1918 virus HA gene, although more closely related to avian strains than any other mammalian sequence, is mammalian and may have been adapting in humans before 1918.

Indexed as

Evolution, MolecularPhylogenyAdultAmino Acid SequenceBase SequenceHemagglutinin Glycoproteins, Influenza VirusHistory, 20th CenturyHumansInfluenza A virusInfluenza, HumanMaleMolecular Sequence DataHemagglutinin Glycoproteins, Influenza Virus

Identifiers

PMID9990079
PMCPMC15547
OpenAlexW2056400193

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.