El Paso’s Fever Pitch: Dust Storms and Extreme Weather Fuel Valley Fever Surge

An extensive investigation conducted by scientists affiliated with The University of Texas at El Paso has pinpointed a marked escalation in the prevalence of Valley fever cases within El Paso over the preceding decade, revealing a robust correlation between the affliction and periods of extreme weather, elevated wind speeds, and airborne particulates.

The findings of this research, which have been disseminated in the International Journal of Biometeorology, encompass an analysis of documented instances of coccidioidomycosis, widely recognized as Valley fever, spanning the years 2013 through 2022. A pivotal discovery from this investigation indicated that the rate of infection more than threefold during this interval.

Valley fever originates from the inhalation of fungal spores harbored in soil, which are propelled into the atmosphere under specific environmental circumstances. Although frequently presenting with mild symptoms, this malady can precipitate severe pulmonary distress and, in certain individuals, may lead to enduring health issues or prove fatal.

These findings lead us to infer that it is not merely the commonplace dusty conditions that precipitate infections, but rather more severe and intermittent environmental phenomena. Intense gusts of wind and dust events have the potential to agitate soils in a manner that liberates substantial quantities of the fungus into the air.”

Thomas Gill, Ph.D., a distinguished professor within UTEP’s Department of Earth, Environmental and Resource Sciences, and a collaborating author on the study

Utilizing sophisticated statistical methodologies, the research cadre meticulously examined the interplay between meteorological patterns and air quality in influencing disease trajectories. Their conclusions demonstrate a statistically significant association between elevated disease incidence and ambient temperatures surpassing 102 degrees Fahrenheit during the preceding month, peak wind velocities exceeding 64 miles per hour several months prior, and uncommonly high concentrations of atmospheric dust particles, particularly those measuring 10 micrometers in diameter or less.

Despite Valley fever not being transmissible between individuals and being a mandatory reporting condition in El Paso County, the researchers issue a cautionary note regarding the likelihood of underdiagnosis. A considerable number of cases exhibit symptomatology that closely resembles other ailments, such as influenza, pneumonia, or even COVID-19, potentially impeding timely and accurate diagnosis and therapeutic intervention.

Gabriel Ibarra-Mejia, M.D., Ph.D., an associate professor of public health sciences and one of the primary investigators, underscored the critical importance of these discoveries for the strategic planning of public health initiatives.

“Our research unequivocally demonstrates that the risk associated with Valley fever can be predicted by monitoring specific environmental indicators,” stated Ibarra-Mejia. “By discerning the conditions that precede surges in case numbers, public health authorities and medical practitioners can be more effectively equipped to identify, diagnose, and manage this disease.”

The investigation also elucidated specific seasonal trends, with the highest volume of reported diagnoses occurring during the summer months, with a particular concentration in July and August.

“This body of work powerfully highlights the regional environmental factors that contribute to the inhalation of Coccidioides fungal spores,” commented C. Scott Kruse, Ph.D., the dean of the UTEP College of Health Sciences. “This encompasses air quality concerns and climate-related risks that exert a substantial influence on public well-being, especially within vulnerable populations.”

El Paso’s geographical positioning within the Chihuahuan Desert, coupled with its propensity for frequent dust events and ongoing development, may serve to amplify exposure risks, as explained by Ibarra-Mejia. He further observed that the disruption of landmasses due to construction activities and the expansion of urban areas could also play a role in the release of fungal spores into the atmosphere.

The study’s outcomes underscore the imperative for heightened awareness among both the general populace and healthcare providers, particularly in the aftermath of extreme weather phenomena, according to the researchers.

“Comprehending the intricate relationship between climate and disease is no longer a matter of choice,” asserted Gill. “It is an absolute necessity for the cultivation of resilient communities in geographic areas akin to our own.”

Narges Khanjani, M.D., Ph.D., a distinguished professor of epidemiology and biostatistics at the Paul L. Foster School of Medicine, Texas Tech Health El Paso, served as the co-lead author of the study. Significant contributions were also provided by researchers from New Mexico State University, the University of California, Merced, and several other academic institutions.