Evidence map›Paper›PMID 33738101›Full record

ReviewEvolution, medicine, and public health2021

Let fever do its job: The meaning of fever in the pandemic era.

Sylwia Wrotek, Edmund K LeGrand, Artur Dzialuk, Joe Alcock

Open access · goldAbstract readReview
In one paragraph

Review in Evolution, medicine, and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
2.9field-weighted citation impact, top 7% 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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 81 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Review
  4. The poikilothermic hypothesis of sepsis.Critical care (London, England) · 2026
    Review
  5. Review
  6. The cycle of infectious fever - how it affects bacterial infections.Frontiers in cellular and infection microbiology · 2026
    Review
  7. Fever Inspiration: Precision Engineering for Safe and Systemic Immunotherapy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. The Elephant and the Spandrel.Evolution, medicine, and public health · 2025
    Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Association between Acute and Chronic Inflammatory States: A Case-Control Study.Homeopathy : the journal of the Faculty of Homeopathy · 2024
    Article
  19. Article
  20. [Feverphobia: Frecuency and related factors associated]Revista de la Facultad de Ciencias Medicas (Cordoba, Argentina) · 2024
    Observational
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

4 authors at 4 institutions in 2 countries.

Sylwia WrotekDepartment of Immunology, Nicolaus Copernicus University, Torun, Poland.
Edmund K LeGrandDepartment of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee Knoxville, TN, USA.
Artur DzialukDepartment of Genetics, Kazimierz Wielki University, Bydgoszcz, Poland.
Joe AlcockDepartment of Emergency Medicine, University of New Mexico, Albuquerque, USA.ORCID 0000-0003-0807-164X
Kazimierz Wielki University in Bydgoszcz · PLKnoxville College · USNicolaus Copernicus University · PLUniversity of New Mexico · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although fever is one of the main presenting symptoms of COVID-19 infection, little public attention has been given to fever as an evolved defense. Fever, the regulated increase in the body temperature, is part of the evolved systemic reaction to infection known as the acute phase response. The heat of fever augments the performance of immune cells, induces stress on pathogens and infected cells directly, and combines with other stressors to provide a nonspecific immune defense. Observational trials in humans suggest a survival benefit from fever, and randomized trials published before COVID-19 do not support fever reduction in patients with infection. Like public health measures that seem burdensome and excessive, fevers involve costly trade-offs but they can prevent infection from getting out of control. For infections with novel SARS-CoV-2, the precautionary principle applies: unless evidence suggests otherwise, we advise that fever should be allowed to run its course. Lay summary: For COVID-19, many public health organizations have advised treating fever with medicines such as acetaminophen or ibuprofen. Even though this is a common practice, lowering body temperature has not improved survival in laboratory animals or in patients with infections. Blocking fever can be harmful because fever, along with other sickness symptoms, evolved as a defense against infection. Fever works by causing more damage to pathogens and infected cells than it does to healthy cells in the body. During pandemic COVID-19, the benefits of allowing fever to occur probably outweigh its harms, for individuals and for the public at large.

Indexed as

acetaminophenantipyreticCOVID-19feverhost defensesickness behavior

Identifiers

PMID33738101
PMCPMC7717216
OpenAlexW3108057287

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.