The study, published in the journal Science Advances, investigated the effect of long-term exposure to PM 2.5 pollutants (small particles in the air less than 2.5 microns wide) on Covid-19 mortality in 3089 counties. The United States “covers 98 percent of the population.”
“Higher historical exposure” to these particulate pollutants was found to be associated with higher county-level Covid-19 mortality after considering some regional-level risk factors. ..
Although this study could not provide insight into the underlying mechanisms of the relationship, scientists, including scientists at Harvard University in the United States, found that chronic exposure to PM 2.5 resulted in a new coronavirus. It is thought to cause overproduction of ACE-2 receptors in some lungs and is used to enter host cells.
They believe that long-term exposure to air pollution can also damage people’s immune system.
“Chronic exposure to PM2.5 causes overexpression of ACE-2 receptors in the alveoli, impairing host defense, which is more severe in ACE-2 depleted lungs, Covid-19. And increase the likelihood of adverse consequences, including death, “scientists write in this study.
Citing the limits of the study, scientists said they were unable to adjust for individual-level risk factors such as age, race, and smoking status. No such data was available.
“This approach does not allow us to draw conclusions about individual-level relevance,” scientists said.
However, researchers said the analysis provides a strong justification for follow-up as higher quality Covid-19 data becomes available.
“A study of how modifiable factors exacerbate Covid-19’s symptoms and increase the risk of death is essential to guide policies and actions to minimize pandemic-related mortality.” They said in a study.
Chronic exposure to air pollution can hurt people diagnosed with Covid, Health News, and ET Health World
Source link Chronic exposure to air pollution can hurt people diagnosed with Covid, Health News, and ET Health World