Researchers have identified the seasonal and climate-based cycles of Valley fever, an emerging but dangerous fungal disease spread through dust in the air.
Valley fever cases peak from September to November; drought temporarily dampens these peaks, but leads to bigger surges once rain returns
The researchers found that on average, counties in the San Joaquin Valley and Central Coast regions had the most pronounced seasonal peaks, though the peaks started earlier in San Joaquin Valley. "Knowing when the Valley fever season starts and how intense it will be can help health care practitioners know when they should be on high alert for new cases," said corresponding author Justin Remais, Ph.D., professor at UC Berkeley School of Public Health."This is the first study to pin down exactly when disease risk is highest in all of California's endemic counties, as well as places where the disease is newly emerging.
"This work is an important example of how infectious diseases are influenced by climate conditions," said Heaney."Even though droughts appear to decrease Valley fever cases in the short term, the net effect is an increase in cases over time, particularly as we experience more frequent and severe droughts due to climate change."
"Arizona is much dustier than California and has very different climate dynamics, and about two thirds of cases in the United States occur in Arizona, so that's where we're looking next," said Heaney."Understanding where, when, and in what conditions Valley fever is most prevalent is critical for public health officials, physicians, and the public to take precautions during periods of increased risk."Alexandra K. Heaney, Simon K. Camponuri, Jennifer R.
Diseases And Conditions Public Health Education Drought Fungus Virology Drought Research Earthquakes Severe Weather
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