Evidence map›Paper›PMID 34404778›Full record

ArticleNature communications2021

SARS-CoV-2 disease severity and transmission efficiency is increased for airborne compared to fomite exposure in Syrian hamsters.

Julia R Port, Claude Kwe Yinda, Irene Offei Owusu, Myndi Holbrook, Robert Fischer, Trenton Bushmaker, Victoria A Avanzato, Jonathan E Schulz, Craig Martens, Neeltje van Doremalen and 2 more

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed
–field-weighted citation impact
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

97 citing papers in PubMed.

  1. Trial
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  4. Discontinuing contact precautions for COVID-19: the science says its time.Infection control and hospital epidemiology · 2026
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  12. Broad beta-CoV immunity and transmission blockade by a single-dose live-attenuated vaccine with atypical codon usage.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  13. Review
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  17. Article
  18. Article
  19. Review
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Julia R Port *Laboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Claude Kwe Yinda *Laboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Irene Offei OwusuLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Myndi HolbrookLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.ORCID 0000-0003-2376-2633
Robert FischerLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Trenton BushmakerLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.ORCID 0000-0002-2161-4808
Victoria A AvanzatoLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Jonathan E SchulzLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Craig MartensRocky Mountain Genomics Core Facility, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.
Neeltje van DoremalenLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.ORCID 0000-0003-4368-6359
Chad S ClancyRocky Mountain Veterinary Branch, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA.ORCID 0000-0002-5354-9270
Vincent J MunsterLaboratory of Virology, Division of Intramural Research, National Institutes of Health, Hamilton, MT, USA. vincent.munster@nih.gov.ORCID 0000-0002-2288-3196

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM008169 · NIGMS · EMORY UNIVERSITY · PI GROSS, ROBERT E · 1987 to 2021
$20.3M
NIGMS NIH HHS T32 GM008169
6 · The paper itself

Abstract

Transmission of SARS-CoV-2 is driven by contact, fomite, and airborne transmission. The relative contribution of different transmission routes remains subject to debate. Here, we show Syrian hamsters are susceptible to SARS-CoV-2 infection through intranasal, aerosol and fomite exposure. Different routes of exposure present with distinct disease manifestations. Intranasal and aerosol inoculation causes severe respiratory pathology, higher virus loads and increased weight loss. In contrast, fomite exposure leads to milder disease manifestation characterized by an anti-inflammatory immune state and delayed shedding pattern. Whereas the overall magnitude of respiratory virus shedding is not linked to disease severity, the onset of shedding is. Early shedding is linked to an increase in disease severity. Airborne transmission is more efficient than fomite transmission and dependent on the direction of the airflow. Carefully characterized SARS-CoV-2 transmission models will be crucial to assess potential changes in transmission and pathogenic potential in the light of the ongoing SARS-CoV-2 evolution.

Indexed as

FomitesAdministration, IntranasalAerosolsAnimalsCOVID-19CytokinesFemaleHigh-Throughput Nucleotide SequencingLungMesocricetusNasal CavityParticle SizeRespiratory SystemRNA, ViralSARS-CoV-2Severity of Illness IndexAerosolsCytokinesRNA, Viral

Identifiers

PMID34404778
PMCPMC8371001

What OpenQuestion holds

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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.