How hydrogen sulfide exposure may make the flu worse

Deciphering mechanisms of hydrogen sulfide-induced susceptibility to influenza A virus infection

NIH-funded research University of California at Davis · NIH-11266219

This project looks at whether breathing low, real-world levels of hydrogen sulfide can make influenza A infections more severe for people.

Quick facts

Grant typeR21 grant
Study typeNIH-funded research
Funding institutionUniversity of California at Davis NIH-funded
Lab location1 site (Davis, United States)
Project IDNIH-11266219 on NIH RePORTER

What this research studies

Researchers will expose mice to low concentrations of hydrogen sulfide similar to levels seen in some workplaces and then give them Influenza A to see how infection unfolds. They will track survival, lung injury, inflammation, and immune responses in the animals. Lab tests on lung tissue and cells will be used to identify the biological pathways by which hydrogen sulfide changes flu outcomes. The team aims to connect environmental exposure to measurable changes that could explain worse flu illness after hydrogen sulfide exposure.

Who could benefit from this research

Good fit: People who work in industries with known hydrogen sulfide exposure or who live in areas with elevated air pollutants and are concerned about flu risk are most relevant to this work.

Not a fit: People with no hydrogen sulfide exposure and low risk of influenza are unlikely to see direct benefits from this research in the near term.

Why it matters

Potential benefit: If successful, the findings could inform workplace safety rules and lead to strategies to protect people exposed to hydrogen sulfide from severe influenza.

How similar studies have performed: This is a novel focus: while air pollution has been linked to worse respiratory infections, no prior studies have specifically examined how hydrogen sulfide interacts with Influenza A.

Where this research is happening

Davis, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Conditions Airway infections
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.