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Updated: Dec 23, 2025

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Does the pathogenesis of SARS-CoV-2 virus decrease at high-altitude?

Christian Arias-Reyes1, Natalia Zubieta-DeUrioste2, Liliana Poma-Machicao1

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High-altitude dwellers may have better protection against severe COVID-19. Physiological adaptations to lower oxygen levels could reduce susceptibility to SARS-CoV-2 infection and its severe effects.

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COVID-19HypoxiaLung remodelingUV

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Area of Science:

  • Environmental Health
  • Infectious Diseases
  • Altitude Physiology

Background:

  • COVID-19 (Coronavirus Disease 2019) has caused a global pandemic.
  • High-altitude regions present unique physiological challenges due to hypoxic conditions.
  • The impact of high-altitude living on COVID-19 severity requires further investigation.

Purpose of the Study:

  • To test the hypothesis that high-altitude inhabitants are less susceptible to severe COVID-19.
  • To compare epidemiological data of COVID-19 in high-altitude regions versus lowland areas.

Main Methods:

  • Analysis of epidemiological data from Tibet, Bolivia, and Ecuador (high-altitude regions).
  • Comparison of high-altitude data with available lowland COVID-19 data.
  • Exploration of potential physiological and environmental mechanisms.

Main Results:

  • Epidemiological data suggest lower susceptibility to severe COVID-19 in high-altitude populations.
  • Physiological acclimatization/adaptation to hypoxia may offer protection against severe SARS-CoV-2 infection.

Conclusions:

  • High-altitude environments and associated physiological adaptations may mitigate severe outcomes of COVID-19.
  • Potential protective mechanisms include viral half-life reduction and hypoxia-mediated downregulation of ACE2.