Researchers at UTHealth Houston and Baylor College of Medicine have made a groundbreaking discovery in the fight against avian influenza A(H5N1). Using virome sequencing, they were able to detect the virus in the wastewater of 10 cities in Texas. This method involves analyzing the collection of viruses in a sample, in this case, wastewater.
The findings, published in the New England Journal of Medicine, revealed that H5N1 had not been detected in wastewater samples prior to March 2024. However, from March to July of that year, the virus was found in 10 cities, 22 sites, and 100 samples out of 399 analyzed. Despite this discovery, there was no correlation between the presence of H5N1 in wastewater and influenza-related hospitalizations, indicating a low risk to the public.
The researchers established a wastewater testing program as part of the Texas Epidemic Public Health Institute (TEPHI) to monitor the spread of viruses. The sequencing protocol used by the team can detect genetic changes in the virus that may indicate an adaptation to mammals, including humans. While the source of the virus load found in wastewater was determined to be of animal origin, ongoing surveillance is crucial to monitor any potential evolutionary adaptations that could pose a risk to humans.
TEPHI has detected over 400 human and animal viruses since May 2022, including SARS-CoV-2, influenza, and mpox. The team uses a viral probe capture set to target thousands of viral species or variants, allowing for comprehensive monitoring of viral activity in the population.
For more information on this groundbreaking research, the study can be found in the New England Journal of Medicine under the title “Sequencing-Based Detection of Avian Influenza A(H5N1) Virus in Wastewater in Ten Cities.” This research highlights the importance of ongoing surveillance and monitoring of viral activity in wastewater to protect public health.
This research was provided by the University of Texas Health Science Center at Houston and represents a significant step forward in our understanding of avian influenza and its potential impact on human health.
