Understanding how the St. Louis encephalitis virus spreads and survives

Transmission dynamics and fitness of reemerging St. Louis encephalitis virus

['FUNDING_R21'] · UNIVERSITY OF CALIFORNIA AT DAVIS · NIH-10880542

This study is looking into how the St. Louis encephalitis virus, which can make people very sick, is coming back in California and Arizona, and it aims to understand how it spreads between mosquitoes and birds to help keep everyone safe.

Quick facts

Phase['FUNDING_R21']
Study typeNih_funding
SexAll
SponsorUNIVERSITY OF CALIFORNIA AT DAVIS (nih funded)
Locations1 site (DAVIS, UNITED STATES)
Trial IDNIH-10880542 on ClinicalTrials.gov

What this research studies

This research investigates the St. Louis encephalitis virus (SLEV), a mosquito-borne pathogen that can cause serious illness, including encephalitis. The study focuses on how SLEV has reemerged in California and Arizona, examining the virus's infectivity and transmissibility in both mosquito and bird populations. By analyzing the genetic differences between historical and contemporary strains of SLEV, the research aims to identify factors that contribute to its resurgence and spread. This could involve studying the interactions between the virus and its mosquito vectors, particularly the Culex species, to understand how these dynamics affect human health.

Who could benefit from this research

Good fit: Ideal candidates for participation or benefit from this research include individuals living in areas with known SLEV activity, particularly in California and Arizona.

Not a fit: Patients who live in regions where SLEV is not present or who are not at risk of mosquito exposure may not receive any benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to better prevention strategies and public health responses to SLEV outbreaks, ultimately reducing the incidence of related illnesses in humans.

How similar studies have performed: Previous research on the West Nile virus has shown success in understanding its transmission dynamics, suggesting that similar approaches may yield valuable insights for SLEV.

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.

View on NIH RePORTER →

Last reviewed 2026-05-15 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.